10 degrees per side is a very acute edge my friend. Not many people go that low, unless you're plan is to sharpen some scandi ground knives or something. I've got benchstones, a Sharpmaker, and a KME. The Sharpmaker is nice if you already have a nice edge from a previous reprofiling job, or a really good, thin factory edge, and you want to keep it sharp. It's not fun at all for reprofiling, especially if you want to go down to super acute angles. I'd recommend choosing between either the Worksharp Precision Adjust, or freehand benchstones. The Worksharp is fantastic for the price, I constantly see people saying they love theirs.