If inaccuracy...
(Improperly cut angle markings)
poor fit and finish...
(Knobs coming loose, plastic bits sticking out, poor finish on the bottom that interferes with the blade guide, loose pieces)
(Oh, and one of my suction cups comes loose after a few minutes)
poor quality stones...
(Smaller, very poor cutting, mediocre finish)
improper design...
(Lack of Blade stops in either direction, copy of older pivot design that's no longer used on "real" Edge Pro)
and a poor Xerox copy of the actual Edge Pro Manual...
(Some pages nearly illegible, but hey, they at least tried to white out all "Edge Pro" references)
(And no customer support... no email address or phone number anywhere to be found, so some of this could at least be addressed)
...don't bother you, then this is the sharpener for you!
In all seriousness... I bought one to compare, and this is what I found. If sharpening isn't a high priority, or you know enough to overcome some of the deficiencies, like the angle markings and blade stop issues, then maybe it's worth it. You can use "real" Edge Pro stones on it... at a minimum I'd replace the ones that come with this... they're awful. I wonder if, over time, the fit/finish issues will equal failure... I've had my original EP for years with no issues.
I'm not saying do or don't buy, that's your choice... just be aware of what you're getting.