Unless a blade is so thick it will barely sharpen, or it has been abused, a red DMT and a strop loaded with green compound is all you need.
An Edge pro might be nice but I have better things to spend money on. I keep my knives sharp enough to shave hair without pulling or scraping with just the above. Sure you can get a sharper edge by highly polishing it on a system like an Edge Pro but that edge is gone in a few cuts back to my level of sharp.
