My experiences:
I had a Work Sharp, and found it was far too easy to mess up a blade unless you're EXTREMELY careful and keep the blade moving at all times. I hated it, so I returned it for a refund.
I've never used an Edge Pro, so I can't speak first hand to it's benefits or idiosyncrasies. I did a huge amount of research (as always) and have heard from others that have them. Second hand, they said the toughest parts are holding the blade in consistent position and compensating for different thickness stones. I decided not to go there since I wanted something a little more repeatable and fool proof.
I have and currently use a Wicked Edge, Sharpmaker, Tormek, Diamond Stones, Water Stones, Shapton Ceramic Glass-Backed Water Stones, and Strops. I believe it's all about the best tool for the job. My preferences (yours may vary) are:
Nice Knives and Kitchen Knives - Wicked Edge, hands down. It's pricey but also fast, simple, bullet proof, and repeatable. The clamp holds the blade in position for you during the whole operation instead of you having to hold it. The stones are all identically sized, so there is no compensating for different-thickness stones. They have a huge selection of different stone options for future expansion, if desired. It's a "dry" system so there is less sloppy mess to clean up. The Angle Cube and new ball-bearing joint arms let you dial in an angle to 1/10 of one degree.
Working Knives and Touch-Ups - Sharpmaker and Strops.
Woodworking Chisels and Plane Blades - Flatten the backs with Diamond Stones and Shapton Water Stones and then hone the bevel with the Tormek. Use the Tormek Power Strop for final tuning.
I hope my experiences have helped you. Good luck with whatever you end up choosing!