Different types of sharpeners produce vastly different results ... Most commercial kitchen and butchering knives are (relatively) soft stainless steel blades, that will pick up small edge deformations ...

That's definitely the case with the Hunter.Dual 12-Piece Knife Set. While it's usually $40 at Amazon, it's reduced by a ...

D2: A common stainless steel for lower-cost pocket knives that’s easy to sharpen. 440A/C: Lower-cost stainless steels that aren’t as durable but resist rust and are easy to sharpen.