I'd try a polar star before buying one if I were you. They shoot well but don't give much response, I don't find them much fun and it's a lot of money. Just something to be aware of
have tried a mates one. Put it this way, after that I will be looking at a cheap gbbr that has a hell of a kick. im guessing cm16 gbb?
Heard lots of bad things about the Combat Machine GBBRs unfortunately. Those WE ones are cheap and reviews are good though.