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KOIOS 4-In-1 Immersion vs Vitamix 5-Speed Immersion Side-by-Side Comparison

Tina Pham
Tina Pham
Reviewer
Nguyen Ntk
Nguyen Ntk
Visual Specialist
Reviewed
Tested Using Methodology v1.0
Updated Jan 18, 2023
Tested Using Methodology v1.0
Updated Jan 18, 2023
The koios 4 in 1 hand blender standing on the gray table with its accessories, including a user manual, plastic beaker, whisk attachment, food processor located above a paper carton box. The KOIOS 4-in-1 immersion blender standing on the gray table with its accessories, including a user manual, plastic beaker, whisk attachment, food processor located above a paper carton box.
Unboxing the Vitamix immersion blender, from left to right: an owner’s manual, a recipes booklet, a red receipt, the Vitamix 5-speed with a stainless steel motor body and an immersion blending wand, and a paper carton box.
Blenders type
immersion
immersion

Our Verdict

8.0
Overall Score
  • Performance (50%)
    7.9/10
  • Design (20%)
    7.6/10
  • Usability (30%)
    8.3/10
8.6
Overall Score
  • Performance (50%)
    8.6/10
  • Design (20%)
    9.1/10
  • Usability (30%)
    8.2/10

Plenty of brands claim their immersion blender can deliver a strong performance, but the Vitamix is among the few that really make us feel like we can blend just about everything in our kitchen. 

Although it’s expensive, it warrants the higher cost with its velvety blended results and superior durability. Compared with the KOIOS, it weighs a little bit more, and its blending shaft is a little longer. That stated, it’s still portable and well-balanced enough to help us blend without hand fatigue. 

If you go with this high-quality blender, it certainly won't take long to prepare a batch of smooth whole-food combinations.

Good Enough

KOIOS 4-in-1 Hand Blender Performance

Vitamix Immersion Blender Performance: Top of the Line
7.9
Performance Scores
  • Hot Soup Purée (35%)7.5/10
  • Frozen Fruit Smoothie (30%)7.8/10
  • Mayonnaise (15%)9.8/10
  • Almond Milk (15%)7.5/10
  • Whipped Egg-Whites (5%)7.0/10
8.6
Performance Scores
  • Hot Soup Purée (35%)9.5/10
  • Frozen Fruit Smoothie (30%)8.8/10
  • Mayonnaise (15%)8.3/10
  • Almond Milk (15%)9.3/10
  • Whipped Egg-Whites (5%)0/10
7.5

Hot Soup Purée

9.5
Scooping a spoon of pureéd soup made by the KOIOS 800W immersion hand blender from a plastic beaker.
Scooping a spoon of pureéd soup made by the KOIOS 800W immersion hand blender from a plastic beaker.
KOIOS 4-In-1 Immersion Hot Soup
A batch of soup pureéd by the KOIOS 4-in-1 hand blender is checked for smoothness by being drained through a stainless steel mesh strainer.
  • Pureeing Time: 30 seconds
  • Result: Slightly Chunky
  • Suction: No

None of the low-range blenders we tested could yield the silkiest puree in 30 seconds, but we think the KOIOS’ results will still be acceptable to most home cooks.  In particular, the soup looked silky but when we ran it through a strainer, too many tiny bits were left behind. Nevertheless, we were still satisfied with this blender, given its consistency and smooth operation. Just in case you’re expecting for silky, restaurant-quality pureés, we recommend the Vitamix 5-speed.

Scooping a spoon of pureéd soup from the plastic beaker to check its smoothness.
Scooping a spoon of pureéd soup from the plastic beaker to check its smoothness.
Vitamix Immersion Blender Soup Purée Video
Draining the pureéd soup with a stainless steel mesh strainer to inspect solid chunks.
  • Pureeing Time: 30 seconds
  • Result: Exceptionally smooth
  • Suction: No

Pureeing hot soup wasn't challenging the Vitamix thanks to its powerful motor and razor-sharp blades. Although it wasn’t any faster than its counterparts in pureeing time, it warranted the higher cost by providing us with a nutrient-dense purée of silky smooth texture. It also stood out from the rest with a non-suction performance that helped keep splashing to minimal.  

Indeed, the Vitamix is the most suitable hand blender for preparing restaurant-quality soup at home. It’s a great bargain for any recipes that involve fibrous food, too. If you’re now looking for a tool that can consistently ensure the smoothest blends, we particularly love and recommend this blender.

7.8

Frozen Fruit Smoothie

8.8
A white bowl containing a batch of green smoothie whose parts are scooped with a stainless steel spoon is between the KOIOS’s motor body and a smartphone displaying the total blending time (1 minute and 19 seconds).
A white bowl containing a batch of green smoothie whose parts are scooped with a stainless steel spoon is between the KOIOS’s motor body and a smartphone displaying the total blending time (1 minute and 19 seconds).
KOIOS 4-In-1 Immersion Smoothie
After finishing blending, the green smoothie made by the KOIOS hand blender was spread evenly throughout a white paper to check for solid chunks.
  • Blending Time: 1 min 20 secs
  • Result: Slightly Coarse
  • Suction: No

The manufacturer recommends this blender not be used to process frozen fruits. That fact made us skeptical about its overall capability. After much deliberation, we decided to stick to the initial plan, putting it through our frozen smoothie test anyway. To our surprise, its result was nearly the same as that produced by the Vitamix 5-speed immersion blender

In less than a minute and a half, it churned out a frozen smoothie that was flavorful enough to entice our taste buds. The drink didn’t have a velvety smoothness; it was a bit grainy since the kale wasn’t entirely liquified. Despite that, it was still a sweet, creamy combination that we loved to sip on.

Scooping a spoon of smoothie from the plastic beaker to check its texture after the Vitamix immersion blender had completed the test in 1 minute and 5 seconds.
Scooping a spoon of smoothie from the plastic beaker to check its texture after the Vitamix immersion blender had completed the test in 1 minute and 5 seconds.
Vitamix Immersion Blender Smoothie Video
After finishing blending, the green smoothie was spread evenly throughout a white paper on a gray table to check for solid chunks.
  • Blending Time: 1 min 5 secs
  • Result: Smooth
  • Suction: No

The Vitamix took only 1 minute and 5 seconds to complete this test. By comparison, its counterparts such as the UTALENT 5-in-1 and the Hamilton Beach 2-speed required nearly double the time. 

Regarding the smoothie’s texture, of all the blenders we tested, only the Vitamix could churn out a thick, creamy smoothie with almost no solids left behind. Plus, despite being longer and heavier, it operated well in our 24-oz blending jar while the BPA-free plastic bell guard helped prevent scratches on the jar’s surfaces.

9.8

Mayonnaise

8.3
A little bit of mayonnaise sticking in the whisk attachment of the KOIOS 4-in-1 hand blender when it is removed from the full batch emulsified in a plastic beaker standing between the motor body and a smartphone displaying the total emulsion time (1 minute and 10 seconds).
A little bit of mayonnaise sticking in the whisk attachment of the KOIOS 4-in-1 hand blender when it is removed from the full batch emulsified in a plastic beaker standing between the motor body and a smartphone displaying the total emulsion time (1 minute and 10 seconds).
KOIOS 4-In-1 Immersion Mayonnaise
  • Emulsifying Time: 1 min 10 secs
  • Result: Velvety
  • Suction: No

The KOIOS made short work of incorporating egg yolks and canola oil, churning out a harmonious texture in just over one minute. Apart from being one of the fastest, it was also among the few blenders in our test that produced exceptionally smooth emulsification. Our mayonnaise came out thick, creamy, and spreadable. For such a low-priced hand blender, this performance could hardly have been better.

Scooping a spoon of mayonnaise emulsified by the Vitamix immersion blender from a white bowl to check its creaminess.
Scooping a spoon of mayonnaise emulsified by the Vitamix immersion blender from a white bowl to check its creaminess.
Vitamix Immersion Blender Mayonnaise
  • Emulsifying Time: 1 mins 40 secs
  • Result: Quite Thick
  • Suction: No

In this test, most of the blenders produced acceptable outcomes and only our culinary expert could tell the differences between them. However, the Vitamix didn’t have the fastest performance, requiring about one minute and forty seconds to incorporate all the ingredients. This was around 30 seconds slower than the winners, including the Cuisinart Smart Stick, KOIOS 4-in-1, BELL 10-speed, and Chefman cordless

This is because when the mayonnaise emulsified and started to thicken, the blending wand generated a suction force, pulling itself against the container’s bottom. That made movement more difficult and slowed the whole process down. We don’t necessarily consider the time to be a deal-breaker. Since the blender itself is quite heavy, though, the longer the process takes, the more it will fatigue your hands. 

In conclusion, despite this drawback, the Vitamix is an acceptable alternative to a hand mixer for preparing mayonnaise or other emulsified sauces. Still, it is not the best hand blender for this job and ideal results may require extra effort.

7.5

Almond Milk

9.3
The KOIOS’s motor body, a plastic beaker containing almond milk, a white plate of almond pulp, and a small red note displaying the total grinding time (1 minute 30 seconds) being side by side.
The KOIOS’s motor body, a plastic beaker containing almond milk, a white plate of almond pulp, and a small red note displaying the total grinding time (1 minute 30 seconds) being side by side.
KOIOS 4-In-1 Immersion Almond Milk
  • Grinding Time: 1 min 10 secs
  • Result: Fine
  • Suction: No

It was simple and easy to put together all the ingredients for a preservative-free milk using the KOIOS. Since this blender ground the nuts pretty evenly, our drink came out silky and creamy. That said, blending didn’t run smoothly; the blending beaker was too small, causing the liquid to overflow every time we moved the blender around.

If you intend to buy the KOIOS for drink preparation, don’t use the beaker that is included in its set.

A bunch of almond shells gets clogged in the Vitamix immersion blending wand which is resting on a beaker full of almond milk.
A bunch of almond shells gets clogged in the Vitamix immersion blending wand which is resting on a beaker full of almond milk.
Vitamix Immersion Blender Almond Milk Test
  • Grinding Time: 40 secs
  • Result: Fine
  • Suction: Slightly

The Vitamix took just 40 seconds to yield one serving of drinkable almond milk.  

That said, from start to finish, its crushing process didn’t go very well. The almond skins, along with peeled chunks, became lodged in the blade guard. We had to stop the blender temporarily and use a spatula to dislodge the food, which we didn’t have to do with other models, such as the Braun MultiQuick-5.

That said, from start to finish, its crushing process didn’t go very well. The almond skins, along with peeled chunks, became lodged in the blade guard. We had to stop the blender temporarily and use a spatula to dislodge the food, which we didn’t have to do with other models.

Not only that, but because the Vitamix couldn’t create a consistent vortex, everything got close to overflowing when we increased the speed. 

Suction was a problem again as well. As a result, we got some almond spatter when we tried to lift up the wand. Most of the splatter-related issues could probably be avoided, though, if we blended it in a taller or larger jar.

7.0

Whipped Egg-Whites

0.0
The 24-oz plastic beaker containing testing beaten egg-white of the KOIOS 4-in-1 immersion blender is put upside down on the gray table with its motor body and a smartphone displaying the total whipping time (2 minutes and 41 seconds) by its sides.
The 24-oz plastic beaker containing testing beaten egg-white of the KOIOS 4-in-1 immersion blender is put upside down on the gray table with its motor body and a smartphone displaying the total whipping time (2 minutes and 41 seconds) by its sides.
KOIOS 4-In-1 Immersion Whipped Egg-Whites
  • Beating Time: 2 min 40 secs
  • Result: Stiff
  • Suction: No

The KOIOS’s whisk attachment worked well — we got the perfect meringue out of the egg whites we beat with the whisk attachment. Its metal wires are bouncy and agile, so they’re flexible enough for whipping and fluffing. However, we can’t say for sure whether those wires will hold up to thick batters for bread doughs or baked cakes. 

On a pragmatic note, the whole beating process lasted nearly 3 minutes, but it didn’t cause hand fatigue like some models, namely the Mueller Ultra-Stick or the BELLA 10-speed. We felt entirely comfortable in that prolonged operation, from start to finish. Indeed, using this blender for preparing airy, creamy desserts will help you stay creative without springing for an expensive specialty device.

The Vitamix blending wand is immersed in a plastic beaker containing failed beaten egg-white with a smartphone displaying the total beating time ( 2 minutes and 17 seconds) next to it.
  • Beating Time: N/A
  • Result: N/A
  • Suction: N/A

The Vitamix could be a great all-around blender if it included a whisk attachment. This is because, in our test, there was no way the immersion blender could beat egg-white with its ordinary blending shaft. Unlike a whisk attachment, the blending shaft can’t force air into the egg whites, which is the way to create an even, bubbly foam. Consequently, the result was a cloudy liquid with two separate layers of bubble film and eggy water. We awarded it no points for this test.

Practical Simplicity

KOIOS Hand Blender Design

Vitamix Blender Stick Design: Better in Quality than Most
7.6
design Scores
  • Blending Shaft (30%)7.0/10
  • Build Quality (60%)7.5/10
  • Power Cord (5%)10/10
  • Beaker (5%)10/10
9.1
design Scores
  • Blending Shaft (30%)9.5/10
  • Build Quality (60%)9.5/10
  • Power Cord (5%)10/10
  • Beaker (5%)0/10

In the Box of the KOIOS Immersion Blender

In the Box of the Vitamix Immersion Blender
The KOIOS 4-in-1 Stick Blender is shipped with a paper carton box, an immersion blending wand, a motor body, a plastic beaker, a whisk attachment, a food processor, and a user manual.
  • Motor body 
  • Blending shaft 
  • Whisk attachment
  • Food processor
  • Beaker   
  • User manual

In addition to a blending wand, this blender also comes with a beaker, a whisk attachment, and a food processor to enhance its versatility.

The Vitamix Hand Blender is shipped with a carton box, an immersion blending wand, a motor body, and owner’s manuals.
  • Motor body 
  • Blending shaft 
  • User manual

In the package, you will find a handheld motor section, blending wand, and owner’s manual. The lack of additional accessories like a blending jar or a whisk attachment did make us hesitant about the high price. Nevertheless, as soon as we had a hands-on go at this blender, its solid construction proved that it was worth the money.

Dimensions

The KOIOS 4-in Immersion Blender stands on top of its blending shaft on a gray table, with the length of the blending shaft being noted to the side as 7.9 inches, and the total length of the unit as 15.3 inches.
  • Height:
    15.3" (38.9 cm)
  • Width:
    2.1" (5.3 cm)
  • Weight:
    3.4 oz (96 g)
  • Shaft Length:
    7.9" (20.1 cm)

Like all the light-duty immersion blenders we tested, the KOIOS 4-in-1 is well balanced. It is compact, portable, and has a long blending shaft that can be immersed in even a deep pot.

The Vitamix stainless steel immersion blender stands on top of its blending shaft on a gray table, with the length of the blending shaft being noted to the side as 9.2 inches, and the total length of the unit as 17.5 inches.
  • Height:
    17.5" (44.5 cm)
  • Width:
    3.0" (7.6 cm)
  • Weight:
    3.2 oz (90 g)
  • Shaft Length:
    9.2" (23.4 cm)

Compared with others, this blender is quite tall, measuring about 17.5 inches tall, 3 inches wide, and 3 inches deep. That length may allow it to reach the bottom of deep pots more easily. At 3.2 pounds, it is also heavier than most — we were pretty shocked by its weight at first.

7.5

Build Quality

9.5
The whisk attachment, motor body, and blending shaft of the KOIOS 4-in-1 hand-held blender lying flat on a gray table.

Made of medium-quality plastic reinforced with brushed stainless steel, the KOIOS’ body feels relatively solid (but it doesn’t look as sleek as the higher-priced models). Unlike the BELLA 10-speed, it showed no scratches after our course of testing. So far, we haven’t noticed any damage on the exterior; our blender still looks shiny and brand new.

There is a special inner rotary core fixed in the blending shaft that’s different from most immersion blenders in this price range. Thanks to this add-on, the tools are easy to attach to the motor body. Not only that, but they also latch securely in place, unlike the Muller Ultra-Stick that occasionally let go of its whisk.

Vitamix Immersion Blender Review: The motor body and blending wand of the Vitamix lie flat on a gray table.

The Vitamix 5-speed is a simple, high-end blender. Mostly made of stainless steel, it is sturdy and appeals to us aesthetically as well. We’re confident when we say it’s among the few hand blenders on the market that provide the right balance of performance, quality, and value. Better built than most, we also believed its exterior is less likely to be damaged or succumb to basic wear and tear over time.

10

Beaker

Not Included
An included plastic beaker of the KOIOS 4-in-1 hand blender standing on a gray table.
  • Material:
    Plastic
  • Capacity:
    20 oz
  • Measurements:
    Yes
  • Weight:
    0.22 lb
  • Height:
    6.7" (17.0 cm)
  • Dishwasher Safe:
    Yes
  • Tamper Included:
    No

The KOIOS’ beaker has a small 20-oz capacity with measurements in both milliliters and fluid ounces. As a nice bonus, it sports a flared base to ensure stability.

  • Material:
    N/A
  • Capacity:
    NaN fl oz (NaN ml)
  • Measurements:
    N/A
  • Weight:
    NaN oz (NaN g)
  • Height:
    NaN" (NaN cm)
  • Dishwasher Safe:
    N/A
  • Tamper Included:
    N/A

As mentioned above, the Vitamix immersion blender doesn’t come with a particular blending container, but we ensure you can easily buy an optional one of any brand on the market.

Speed and Controls of the KOIOS 800W Hand Blender

Speed and Controls of the Vitamix Hand Blender
A close-up of the Power button and the TURBO button of the KOIOS 4-in-1.
A close-up of the Power button and the TURBO button of the KOIOS 4-in-1.
A close-up of 12 speed settings on the top of the KOIOS’s motor body.
  • Control Type:
    Press-button & speed dial
  • Min Speed:
    11,500 RPM
  • Max Speed:
    14,480 RPM
  • Presets:
    No
  • Noise Level:
    90 dB
  • Digital Display:
    No
  • Pulse Mode:
    Yes

We often feel a bit awkward with blenders that control speed with top-mounted dials; it’s really challenging to move the blending wand, adjust its speed, and hold the beaker at the same time. With the KOIOS, however, that isn’t an issue.

Our 4-in-1 machine offers 12 speed options and a Turbo function. It’s all controlled using two buttons and a dial. While the front controls are extremely responsive, the dial lets us switch between various speed settings with ease and this is partly because the blender itself runs very smoothly.

In particular, throughout each of our tests, we noticed that its motor didn’t vibrate too violently. This helped reduce the overall impact on the beaker and kept it stable rather than constantly jumping around the countertop. In other words, we didn’t need to hold the beaker throughout the whole job, so it wasn’t a problem to dial in the speed with a spare hand.

However, if you find it hard to adjust the dial, you can always just hit the turbo mode. That sends the blender into its highest speed immediately.

A close-up of the Power button and Variable Speed Control button of the Vitamix immersion blender.
Vitamix Immersion Blender Speed and Controls
A close-up of the Power button and Variable Speed Control button of the Vitamix immersion blender.
Five speed indicator lights on top of the Vitamix’s motor body.
  • Control Type:
    Press
  • Min Speed:
    8,600 RPM
  • Max Speed:
    15,700 RPM
  • Presets:
    No
  • Noise Level:
    85 dB
  • Digital Display:
    Yes
  • Pulse Mode:
    No

We particularly like this blender’s intuitive interface. You can get five different speeds out of it but there are only two buttons on the front. You won’t need much practice to operate them smoothly; we figured out how they worked before reading the user manual. As a visual aid, this blender also has an LED display on top indicating the speed.

The Vitamix is also different from others in terms of its acceleration. Its speed steps up gradually rather than the violent torques others create. That went a long way toward preventing messes and should also prolong the motor’s lifespan.

7.0

Blending Shaft

9.5
The blending wand of the KOIOS 4-in-1 hand blender lying flat on a gray table.
  • Material:
    Stainless steel
  • Type:
    Sharp Blade
  • Guard Material:
    Stainless steel
  • Blade Count:
    2
  • Removable:
    Yes
  • Dishwasher Safe:
    Yes

Made of standard stainless steel plated with titanium, the blade has two prongs: one is sharp and the other is dull. Its relatively fragile construction means it isn’t intended for tough ingredients like ice cubes or coffee beans, but it’s still tough enough to handle whole-food combinations.

Unlike most other blenders with lobed or angular guards, this one’s blade guard is shaped like a parabolic arch. This special design allows us to easily reach the blade’s backside for cleaning. The vaulted slope also doesn’t trap food the way others do, so we never had to stop and dislodge debris with a spoon.

The blade guard is also designed to reduce splattering, and it’s really up to the job. However, due to its metal construction and sharp edges, it left marks on the beaker even when we blended very carefully.

The blade assembly of the Vitamix immersion blender features 4 sharp stainless steel prongs.
Stainless Steel Blade Housing with Plastic Guard (Cre: Nguyen Ntk/HealthyKitchen101)
The blade assembly of the Vitamix immersion blender features 4 sharp stainless steel prongs.
A close-up of the sharp stainless steel blade of the Vitamix immersion blender.
  • Material:
    Stainless Steel
  • Type:
    Sharp Blade
  • Guard Material:
    BPA-free plastic
  • Blade Count:
    4
  • Removable:
    No
  • Dishwasher Safe:
    No

The Vitamix’s blade is constructed of hardened stainless steel. Featuring 4 prongs, this is a unique blade assembly found exclusively in Vitamix-brand hand blenders. There is also a permanent bell-shaped guard at the end of the blending wand. As advertised by its manufacturer, this blade guard can efficiently reduce suction. Made of BPA-free plastic, the bell’s rim should help protect the interior surfaces of your cookware or blending containers.

10

Power Cord

10
The KOIOS 4-in-1 Immersion Blender on a gray table with its power cord rolled up next to it.
  • Cord Length:
    5.6 ft (1.7 m)
  • Type:
    2-prong plug
  • Detachable:
    No

The power cord is long enough that you won’t feel constrained. It has a small loop that is meant to keep the blender organized.

The Vitamix hand blender on a gray table with its power cord rolled up next to it.
Vitamix Immersion Blender Hands-on Power Cord
  • Cord Length:
    4.9 ft (1.5 m)
  • Type:
    No
  • Detachable:
    2-prong plug

The Vitamix features a polarized power cord whose one pin is slightly wider than the other. As a safety feature, you can only insert its plug into a polarized electrical outlet in one direction. Should the plug doesn’t fit in your receptacle, make sure you will not force it or try to trim down the pins. Instead, you should contact a qualified electrician for a proper solution.

Whisk Attachment

Extra Accessories

Not Included
The KOIOS 4-in-1 Immersion Blender Whisk Attachment lying flat on a gray table.
  • Material:
    Stainless steel
  • Dishwasher Safe:
    Yes
  • Removable:
    Yes

This whisk attachment is moderately good at certain tasks like beating egg whites, whipping cream, and making emulsified sauces. Compared with other low-priced hand blenders such as the BELLA 10-speed or the Hamilton, its polished stainless steel wires feel more sturdy and durable under consistent use.

  • Material:
    N/A
  • Dishwasher Safe:
    N/A
  • Removable:
    N/A

There is no additional attachment included. If you want to use blending attachments other than the stainless steel shaft provided with this appliance, make sure they’re recommended or offered separately from the Vitamix’s manufacturers.

Food Processor

Extra Accessories

The KOIOS 4-in-1 Immersion Blender Food Processor standing on a gray table.
  • Material:
    Plastic and Stainless steel
  • Dishwasher Safe:
    Yes
  • Removable:
    Yes

We haven’t conducted tests on this attachment, but the stainless steel S-blade’s construction looks capable of chopping various foods just like any other low-grade food processor.

KOIOS Stainless Steel Hand Blender Usability Review

Vitamix Hand Blender Usability Review
8.3
usability Scores
  • Ease of Use (60%)8.3/10
  • Blade Assembly (10%)8.5/10
  • Handling (20%)8.0/10
  • Cleanability (10%)8.5/10
8.2
usability Scores
  • Ease of Use (60%)8.4/10
  • Blade Assembly (10%)8.0/10
  • Handling (20%)8.5/10
  • Cleanability (10%)7.0/10
8.3

Ease of Use

8.4

This KOIOS is easier to use than many other blenders not only because of its simple design but also because its buttons are very responsive. The motor’s minimal vibration contributes to the overall usability scores as well. Since the machine itself runs very smoothly, we can maneuver the blender in comfort. It was a pleasant departure after the excessive vibration of some other blenders.

During our testing, we also found that this blender didn’t create suction — a main cause of splattering when you lift it upward for an even blend. As such, we didn’t experience any trouble when speeding up or moving the blending wand, even at the highest speed setting.

Despite the relatively heavy-weight, The Vitamix is comfortable to hold. It even allows for one-handed operation since there are only two control buttons. Not only that, but this blender is also different from others in terms of its acceleration. Its speed steps up gradually rather than the violent torques others create. That went a long way toward preventing messes and should also prolong the motor’s lifespan.

That being said, we noticed that this blender can cause spattering when operating at the highest speed setting if the container’s sides are not tall enough. This isn’t the case with all immersion blenders (for example, the Braun MultiQuick 5 — a mid-range blender — allowed us to start low and increase as we went without any risk of spattering). 

On the bright side, the Vitamix doesn’t create as much of a mess as the Cuisinart Smart or the cordless KitchenAid. With the bell guard, it doesn’t suction to the pot’s bottom as much as its counterparts, either. As such, you won’t have to simultaneously lift and stir the wand around. Overall, that meant faster blending times and fewer food splatters.

8.5

Blade Assembly

8.0
The KOIOS Blade Assembly

This blender comes with accessory ejection buttons on the motor body — a handy add-on giving you more control over the blade detachment process. Just a quick press of these clicky buttons pushes the attachment off of the motor body.

Putting them back is easy as well. Simply align the shaft with the main housing and push until they click and lock into place. There is one thing we really like about this blender’s blade assembly, though: Unlike others, the KOIOS attachments do not need to be rotated to a specific alignment to lock into place.

Like most immersion blenders, the Vitamix breaks down into two parts that connect with a simple twist. Given how heavy the thing is, though, it may be tougher to get the job done if your hands are greasy.

8.0

Handling

8.5
Someone uses two hands to control the KOIOIS immersion blender: one for holding the handle and pressing the power button at the same time, the other for rotating the speed dial.

The handle was comfortable to grip in all of the tests. Together with the machine’s minimal weight, its ergonomic design helps stave off hand fatigue, even through long bouts of vigorous blending. It also helped us maintain a grip even when the surface was wet or covered in grease.

The handle of the Vitamix stick blender being held at an angle with 4 speed bars is lighting up.
The handle of the Vitamix stick blender being held at an angle with 4 speed bars is lighting up.
Someone is holding the Vitamix immersion blender with a top-down perspective.
A close-up of the Vitamix’s handle being held from a front view.

We’re really impressed with the Vitamix’s ergonomically designed handle. It’s not just about modern looks; this handle is coated with a rubber layer to ensure a comfortable grip, which makes it practical for processing large batches of soup. It’s nice to have that comfort, especially given how heavy the motor is.

This coating is also very handy when you have sweaty or slippery hands. You can focus on your prep work instead of your grip.

8.5

Cleanability

7.0

We found the easiest and most effective way to clean the blending wand or any blending attachment was by scrubbing it under running tap water. More often than not, food tailings could be quickly removed, even when they accumulated in the blade’s backsides.

The removable blending wand is not dishwasher-safe, so after each test, we had to clean it by blending water with dish soap and letting the blades clean themselves. Along the way, we noticed a few extra differences between the Vitamix and its competitors which mainly stem from the blending wand design. 

Although both the soup and smoothie tailings rinsed off easily under the tap, the Vitamix was the most difficult to clean after making mayonnaise. As an oil-based substance that is both sticky and insoluble in water, we couldn’t remove mayonnaise by blending in warm soapy water alone. A lot of gunk remained until we resorted to a bottle-cleaning brush and specialized cleanser.

But the real problem was cleaning the blades. It was a real challenge to scrub the backsides of those blades. And since the 4-pronged blade assembly is razor-sharp, we had to clean it with extreme caution. What a time-consuming and frustrating process that was!