My Griptillian came with edges slightly greater than 20 degrees per side. I thinned it down with a 1 x 30 belt sander so I could use the 20 degree slots on the Sharpmaker for touch up sharpening. If it matches the setting you have, you could go with that, or thicken or thin it to taste. When sharpening other peoples knives, I will sometimes use 25 degrees per side. It limits damage from careless use. If you want a very sharp easy cutting edge, thin it down. I'm still kinda picky about my angles, but FullofLead is right. You have to do a lot of cutting to really tell a difference, or be a leather or wood worker and need the least possible cutting resistance.