I have no comparison (from other manufacturers) but I know I've finally been able to give my woodcarving knives a sharp edge that I just couldn't get with stone and/or sandpaper. They're holding up well so far, so that's a plus.
Office chair Bureaucrat CH-1300N, upholstery: textile, color: black 3C11
14 Review
Lansky 2D2C Diamond Ceramic Four: Ultimate Sharpening Solution for Precision
13 Review
Sharpening stone Hatamoto HT0960, green
22 Review
Computer chair Bureaucrat Knight T1 gaming, upholstery: faux fur, color: milky
27 Review