I have the Cyma AKM. I love it! It shoot straight, has a decent weight to it, and it looks pretty decent.
A couple things though. One... it's gun body cover is loose. Secondly, its wooden stock can only accommodate mini batteries. Next, the butt plate uses screws so it isn't quick to swap out a battery. Next, the screws that hold the thing together are rusty.
And lastly, the bakelite high cap mag it came with really... really... really.... sucks!
The Cyma's ok, but they do cut corners in the small things, just to be warned.