I hate to be tried as a heretic, but the absolute best and fastest system that I have used is this one from Smith's.
http://www.knifeoutlet.com/shop/10Expand.asp?ProductCode=AC129The carbide sharpener put a half decent edge on abused knife edges, and the diamond stone brings that to shaving sharp in a very short time. This is the first time I've ever used ceramic sticks, and I can't believe the polish it puts on a knife blade! I've used and have high dollar stone systems and finish with a hard Arkansas and also have a full Lansky system in the drawer. I've not tried the Edge Pro, but I figured I couldn't pass this up for $20 at Cabela's. I also have a Wyoming stone in the drawer that I use for polishing triggers, and this surpasses even that for the fine polish on a blade. I use it on all my knives and it brings even my hard Buck blades and D2 Benchgrade knives back very quickly.
Selmer