I have one and it performs very well, ignore Vince's random ranting, he's very tempremental when it comes to guns. I dont know if he's seen one yet but its pretty nice. (About the only CA gun i'll support)
So far, I have had only two major problems, one is that when I was disassembling the gun, the cheap plastic part they use for hte fire selector broke, the other is the gun is horrifically overshimmed and as a result the stock motor wouldnt pull an m120, by the time i got it reshimmed I had already ordered a new motor. Lucky me!
Mine as is has the following done to it:
Systema M120
Prometheus Hard Piston
Prometheus Hard Piston Head
Prometheus V3 Spring Guide
Systema Magnum Motor
Madbull Fishbone Hop Up
When it was shooting at the last game I played at i was getting around 200 feet of range with no drop at all. It also chronoed at 380 fps (that was just an M120 spring drop in, not the new stuff) Its beastly. Unlike its G&G counterparts that may have had a rough start this one is rock solid. (Then again i've only seen one G&G m14 go down in about 6-7 and it was something as trivial as a bb jam)
If you get a CA, you get an awesome deal, if you get a TM you get an awesome deal, your not shit outa luck either way.