KOIOS 4-In-1 vs. Breville BSB510XL Control Grip Side-by-Side Comparison

• 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.

• Motor body 
• Blending shaft 
• Whisk attachment
• Chopper bowl with stainless steel chopping blades 
• Blending beaker with dual-purpose storage lid & anti-slip mat
• User manual

Contributing to the high price tag is a set of well-designed attachments, to include a whisk, a chopping bowl, and a 42-ounce blending jar with dual-purpose lid. All of the attachments are top-rack dishwasher safe, which is definitely a big plus. They’re also very practical and easy to use.

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.

At 16.5 inches, this blender’s length is about average. It is top-heavy, though, so it can feel unstable, especially if you want to rest it against the side of your blending beaker when you pause the motor. On the bright side, that length may allow you to reach the bottom of deep pots more easily. Our other concern is the blade housing’s large size; it won’t fit well in all potential containers.

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.

The steeper price of the Breville BSB510XL is justified by its build quality, which is hard to beat. While we have different opinions about the plastic coating of its motor body, whose finish is likely to be marred with minor scratches after repeated use, most everyone agrees that this blender will offer you great durability overall.

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.

The beaker has clearly marked measurements for convenience. It is almost twice the standard size, making it easier for you to maneuver the hand blender around. And since there is more room in the container for the mixture to rise, it also helps to prevent overflow.

For storage, the cup comes with a lid, which then snaps onto the bottom of the cup to keep the container from moving on the countertop when you’re blending. And for some operations, such as making a smoothie, the handle on the jar gave us a good grip.

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.

The motor has 15 speed settings, giving us precise control over our food’s texture. To switch between different speed settings, simply turn the dial at the top of the blender’s motor body. All the controls, including the power button and the speed dial, demand minimal pressure from your finger.  

To blend at high speeds, the manufacturer recommends that you start with the slowest speed and gradually increase to the higher ones to minimize splattering or over-processing. However, we found it difficult to get this job done when both your hands are engaged while blending — one hand to use the controls and the other fighting the blender’s suction force.

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 blending shaft is made of high-quality stainless steel to ensure durability. There is a plastic rim around its base, which is meant to reduce head suction and to protect your cookware from scratches. 

The blade has two prongs—one is razor sharp and the other is dull. To keep the former sharp, you should avoid using it to crush whole ice cubes or to grind raw nuts without liquid.

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 power cord is long enough to reach nearby outlets. It’s notably designed with a finger hole in the power plug so you can easily and safely remove it from the wall socket.

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.

The whisk attachment functions as a hand whisk so you can whip up cream, beat egg whites, and emulsify sauces without a stand-alone mixer. In terms of quality, this part is well built, but one of its wires somehow has a very awkward shape. We can’t say for sure if that happened during shipping or on the production line.

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.

We haven’t tested this attachment, but we think it could serve you well when making something like basil pesto. It could be a good alternative if you don’t want to bother with a full-sized food processor. The Breville can be a moderate food processor in its own right since the included chopping bowl comes at just the right size for chopping vegetables, onions, and more.