I have owned an Edge Pro Apex for about a year and have been VERY happy. It is extremely easy to get a consistent, repeatable angle. I sharpen many different types of pocket, work, hunting, several sizes of filet knives and larger multi-use knives, a plethora of kitchen knives (appx 20, from 12-14" slicers and scimitars to boning, chefs, santoku and paring knives) Let me know if you have any questions.
I have tried an Edgemaker, a Lansky, Smiths "jig system" styled units. I have done it by hand, used a Chefs Choice electric, rocks, cement. The Edge Pro is the way to go for the value for the money. You can also get some very nice replacement stones, mix and match according to your needs and desires. You "could" get a digital angle meter for ~really anal retentive~ sharpening, but quite frankly, I think it's overkill and overthink, unless you have ADD.
