Chef's Choice 4643 EdgeSelect vs. Longzon 4-Stage Manual Sharpener: Great Designs, Slow Sharpening

Overall Verdict

Overall Score

Performance (50%)4.3
Design (15%)9.3
Ease of Use (35%)8.4

Performance (50%)5.6
Design (15%)9.1
Ease of Use (35%)8.2

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

Scissor sharpener

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

Check Price on Amazon

*You help support HealthyKitchen101's product testing and reviews by purchasing from our retail partners.

Analysis and Test Results

Performance

Overall Performance Scoring

4.3

5.6

Sharpening Time Cut Lemon

1.0

Sharpening Time

4 minutes

3 minutes 10 seconds

Cutting Feel

Slightly heavy

Swift and smooth

Maximum Sharpness

6.0

Sharpening Time

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

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

The Longzon household knife sharpener next to a bowl containing metal dust residue

Sharpening Time

1 minute

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

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

The Longzon sharpener standing on a surface

Grip

9.0

A hand holding the Chef’s Choice manual knife sharpener

Material

Rubber

ABS, TPR

Dimensions

Length

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)

Working Section

Levels of Sharpening

Coarse, Fine

Sharpen, Hone, Polish

Abrasive

Diamond-coated disks

Tungsten carbide blades, diamond rods, ceramic rods

Mechanism

Pull through

Sharpening Angle

15° & 20°

20 degrees

Base

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

Part of the base of the Longzon manual knife sharpener

Material

Synthetic rubber

ABS

Feet Type

Slip-proof sole (x 4)

EVA feet

Usability

Overall Usability Scoring

8.4

8.2

Slot Arrangement

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

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 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 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

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.

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.