I read on here a couple years ago, through a thread of a guy that was testing one. He had no bad reviews, he owned both a Yamaha and the chinese knockoff. One thing to make sure before you buy one is availability of parts. Quality will be lacking so you will need parts along the way.
There is a guy here in town that has one, it looks nice and its been running around for quite a while..
01' Raptor 720, Stage 2, FCR'd
97' 250 Vitos Blaster - Big Bore Stroker
85' Tri-Z - YZ PV, Pipe = Stupid
94' Banshee T-5's, Vforce, ported, Cool HEad, 2-1
06' Wolverine - Stock!
06' Rhino 450
06' LTZ 440