I'd love to have an EdgePro, but for still much less money I've even got diamond hones for my Lansky. As for the repeatability of the angles, I find that if I start from coarse stones and work up from there (and you don't need to use the coarse stones for too many strokes), it doesn't make a whole lot of difference for me. Doesn't take off too much metal either.
The Lansky is pretty easy to use, but isn't conveniently portable in that there are several parts to the kit. However, if you are a member of the I-just-can't-get-the-muscle-memory-thing-to-work-right club (a.k.a. -- free hand sharpening on a stone ain't our thing), buy a Lansky. Are there better methods? Probably, but it's still a quick and inexpensive way to go. It works for me. It'll work for you.
-(a different) Craig