I have one and it's been my main field gun. It's the best gun in my rather large collection and shoots better than any airsoft gun I've had the chance to use so far. It's seen only minor upgrades so far (tightbore barrel, stronger spring, new piston & cylinder head) and has been nothing less than a reliable, dependable workhorse gun that delivers time and time again. I couldn't see myself ever replacing this gun with another, even a PTW.
I would highly recommend this gun to anyone from a beginner to an advanced player looking for a dependable, accurate gun.