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Chef's Choice 4643 EdgeSelect vs. Longzon 4-Stage Manual Sharpener Side-by-Side Comparison

A side-by-side comparison of the Chef's Choice 4643 EdgeSelect vs. Longzon 4-stage manual sharpener.

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Chef's Choice 4643

Longzon 4-stage

Chef's Choice 4643 EdgeSelect vs. Longzon 4-Stage Manual Sharpener

Overall Verdict

Ranking by
OverallScore Performance50% Design15% Ease of Use35% ScoreOverall 50%Performance 15%Design 35%Ease of Use Chef's Choice 4643Longzon 4-stage6.54.39.38.47.05.69.18.2
Showing: 2/2 Items

The Longzon is not the best sharpener on the market, but it’s the better choice between the two.

The Chef’s Choice 4643 sports an ergonomic and well-balanced design. Unfortunately, its abrasives didn’t do a great job of sharpening: The device was slow to sharpen and didn’t create a smooth edge. It also didn’t bring the knife very far on the sharpness scale.

Whereas the Chef’s Choice designates a slot for a different grind angle, the Longzon has one for sharpening scissors. The Longzon could only sharpen to the same level of edge keenness; however, it took less time to do the job and did leave a much nicer knife edge, which contributes to its higher overall rating in the end.

Pros & Cons

  • Works with 20° and 15° edges
  • Compatible with serrated blades
  • Grippy handle
  • Neat, ergonomic overall design
  • Sleek design
  • Substantial, accommodative size
  • Fine, smooth knife edge
  • Inclusion of protective gloves
  • Slot for scissors
  • Expensive price
  • Awkward slot layout
  • Tall base
  • Slow sharpening
  • Ineffective slot layout

Key Specs

Stages
2
3
Scissor sharpener
No
Yes
Abrasives
Diamond discs
Diamond, tungsten carbide, ceramic
Grit size
Coarse, Fine
Coarse, Medium, Fine
Dimensions
L9.3 x W2.0 x H2.8 inches
L9.3 x W1.8 x H3.1 inches

Where to Buy

Price at publication
$51.51
$13.30

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Analysis and Test Results

Performance

Overall Performance Scoring
4.3
5.6

Sharpening Time to Cut a Lemon

1.0
1.0
Sharpening Time
4 minutes
3 minutes 10 seconds
Cutting Feel
Slightly heavy
Swift and smooth

Material Retention

7.0
9.0
A bowl containing metal sharpening residue next to the base of the Chef's Choice AngleSelect sharpener
Metal residue in the sharpening slots of the Longzon knife sharpener
Metal residue in the sharpening slots of the Longzon knife sharpener
The Longzon household knife sharpener next to a bowl containing metal dust residue
Sharpening Time
1 minute
1 minute
Target Sharpness

Maximum Sharpness Achieved

6.0
6.0
Sharpening Time
6 minutes
6 minutes
Sharpness Level
7 (Ripe tomatoes, 1 swipe)
7 (ripe tomatoes)

Edge Smoothness

5.2
9.0
Close up view of the knife blade and edge after sharpening with the Chef's Choice AngleSelect
Longzon Knife Sharpener Edge Smoothness

Design

Overall Design Scoring
9.3
9.1

In the Box

The Chef’s Choice manual knife sharpener next to its plastic case
The Longzon knife sharpener lying next to its package box, instruction leaflet, and two gloves

Dimensions

The Chef's Choice 4643 handheld sharpener with arrows and figures showing its dimensions
The Longzon household sharpener with arrows and figures showing its dimensions.
Length
9.3" (23.6 cm)
9.3" (23.6 cm)
Width
2.0" (5.1 cm)
1.8" (4.6 cm)
Height
2.8" (7.1 cm)
3.1" (7.9 cm)
Weight
6.6 oz (187 g)
8.7 oz (246 g)

Build Quality

9.0
9.1
The Chef’s Choice 4643 sharpener disassembled on a cutting board, with a lemon slice
The Chef’s Choice 4643 sharpener disassembled on a cutting board, with a lemon slice
The Chef’s Choice 4643 sharpener disassembled on a cutting board
The Longzon sharpener standing on a surface

Working Section

The working section of the Chef's Choice with 3 abrasive slots on a frame and part of its handle and base
Longzon Knife Sharpener Working Section
Levels of Sharpening
Coarse, Fine
Sharpen, Hone, Polish
Abrasive
Diamond-coated disks
Tungsten carbide blades, diamond rods, ceramic rods
Mechanism
Pull through
Pull through
Sharpening Angle
15° & 20°
20 degrees

Base

The underneath of the Chef's Choice sharpener
The underneath of the Chef's Choice sharpener
One of the feet underneath the Chef's Choice sharpener
The Longzon sharpener lying on a surface with its base in full view
The Longzon sharpener lying on a surface with its base in full view
Part of the base of the Longzon manual knife sharpener
Material
Synthetic rubber
ABS
Feet Type
Slip-proof sole (x 4)
EVA feet

Grip

10
9.0
A hand holding the Chef’s Choice manual knife sharpener
Longzon Knife Sharpener Grip
Material
Rubber
ABS, TPR

Usability

Overall Usability Scoring
8.4
8.2

Slot Arrangement

7.0
7.0
The Chef’s Choice 4643 manual knife sharpener viewed from the side
The working section on the Longzon handheld sharpener, with 1 slot for scissors and slots 2, 3, 4 for knives

Insertion

8.5
9.0
Close up view of the Chef’s Choice sharpener’s sharpening slots 1, 2, and 3
Close up view of the Chef’s Choice sharpener’s sharpening slots 1, 2, and 3
The working section on the Chef's Choice, with 3 slots featuring diamond-coated abrasive discs
Top view of a kitchen knife being sharpened using the Longzon with 2 hands holding them

Pulling Through

8.5
8.0
One of the abrasive slots on the Chef’s Choice 4643 with cutting marks on it
A kitchen knife being sharpened with the Longzon, and the 2 hands that hold the knife and the sharpener

Stability on a Clean Surface

9.5
8.5
2 hands holding and sharpening a kitchen knife with the Chef's Choice sharpener
A hand holding the Longzon on a kitchen countertop and sharpening a knife with it.

Stability on a Wet and Dirty Surface

7.0
8.0
2 hands holding and sharpening a kitchen knife with the Chef's Choice on a salt-sprinkled countertop
A kitchen knife being sharpened with the Longzon on a countertop with salt particles

Behind the Comparison

Headshot of Anh Ngo
Anh NgoSenior Editorial Director

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.

Headshot of Nguyen Ntk
Nguyen NtkVisual Specialist

Nguyen Ntk is a graphic designer, photographer, and videographer whose philosophy centers around respecting and celebrating the beauty of reality. Through his lenses, Nguyen strives to capture the true essence of objects and events, showcasing and highlighting authentic features without distortion or exaggeration.

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