Check out the new spyder RSX paintball gun.  It comes stock with a Tadao board ($150 value), the board allows the gun to hit 30 balls per second in 1 of 5 firing modes.  Its a pretty slick deal, all for well under $300, $269 actually. You indefinably need a fast hopper for this gun,  anything like the Halo B, VL Eye Force or better will work with this super fast gun.  Of course it has eyes too!