^^I think AK's can have great ergonomics. Not in their stock form, but if you make a few modifications, they can be just as adaptable as an AR.
I actually prefer the stock form; I can't understand the fetish to stick the M4-style stock on an AK rifle (or anything else for that matter). No goofy rails, no plastic six-position stocks. Just a basic rifle with iron sights. The only thing I'd change is the pistol grip, and that's only because I have big hands, unless you find the Commie length stock too short and opt for the NATO length one. I don't even mind the shorter stock, and I'm 6'-5".