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SunrisePro Supreme Manual vs Chef'sChoice 4643 Manual Side-by-Side Comparison

We put the SunrisePro Supreme and Chef'sChoice 4643 Manual Sharpener through speed, sharpness, and ease of use tests. Here’s how they measured up.

KitchenIQ 50009 Manual vs Kitchellence 3-Stage Manual


Price at publication
Scissor sharpener
Tungsten carbideDiamond discs
Grit size
CoarseCoarse, Fine
L2.3 x W2.3 x H2.6 inchesL9.3 x W2.0 x H2.8 inches


Build Quality
Overall Design Scoring

As small as it is, the SunrisePro is strong, solid, and sturdy. We could tell it’s made with attention to detail and quality.

This is the aspect where the Chef’s Choice 4643 really lives up to the brand’s reputation. The sharpener is well-built, ergonomic, and a delight to work with.


Slot Arrangement
Pulling Through
Stability on a Clean Surface
Stability on a Wet and Dirty Surface
Overall Usability Scoring

The SunrisePro’s suction mechanism may take some time to get used to, and even then, it can from time to time be challenging to get it to work properly. You may also want to be mindful of the sharpening pressure or risk having your blade eaten away by the device.

The Chef’s Choice 4643 is one of the safest and most comfortable sharpeners to use. Just make sure you do not sharpen in the wrong slot.


Sharpening Time to Cut a Lemon
Maximum Sharpness Achieved
Edge Smoothness
Material Retention
Overall Performance Scoring

The SunrisePro offers faster sharpening than most multi-stage devices. Unfortunately, it does so at the expense of the knife edge.

The Chef’s Choice 4643 gave a subpar performance both in speed and sharpness level. It did not shave off too much steel, but it did not really do anything to the knife’s primary edge either.

Overall Scores

Ease of Use
Overall Scoring

Pros & Cons

  • Strong, sturdy build
  • Extremely quick sharpening
  • Great sharpness 
  • Affordable price
  • Strong suction base (while it works)
  • Works with 20° and 15° edges
  • Compatible with serrated blades
  • Grippy handle
  • Neat, ergonomic overall design
  • Suction base is surface-discriminatory
  • It can peel off a lot of metal
  • Expensive price
  • Awkward slot layout


The SunrisePro wouldn’t be our first choice for a manual sharpener, but when you want sharpness and fast, you can count on it to get the job done. Unfortunately, we can’t say the same about the Chef’sChoice 4643.

The SunrisePro is a compact device with a suction cup for a base, which only works on certain surfaces. It sharpens faster than most despite (or because of?) having only one slot. The maximum sharpness level it can bring your knife to is also on par with multi-stage devices. It does, however, shave off a lot of steel from the knife’s edge, which some may find a deal-breaker. 

The Chef’sChoice 4643 sports a much more substantial size and great design. It’s much safer and easier to use than the SunrisePro. The stability it offers remains unmatched by any other pull-through sharpener. Unfortunately, its sharpening discs are a failure: They create a rough edge that simply doesn’t cut it. 

So as much as we love the Chef’sChoice’s robust build and design, when there’s a knife to sharpen, we’d rather go with the SunrisePro.

Behind the Comparison

Headshot of Anh Ngo
Anh NgoReviewer

Anh Ngo is a writer with 9 years experience at different media outlets, covering from public news and events to product testing and analysis. At HealthyKitchen101, she works across different departments, communicating closely with its network of writers, editors, and health, tech, and search engine experts to provide a meaningful and pleasant reading experience for visitors.

Headshot of Lap Vo
Lap VoTest Lead

Lap is Head of the Research, Testing, and Review Team (RTR Team) at HealthyKitchen101.com, where he directs and supervises the testing of kitchen gadgets and appliances.

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