as it has been said most angels are similar, although I changed from a very nice standard black with a few adjustments to a new fly 2 lcd, and It made a hell of a difference.
I'd recomend the fly 2, the internals can be modified at little cost for better performance, a good choice of barrels is a must, I prefer the boomstick, but I've had no probs with the standard infinity.
If you do want to splash out on a cobra, or adrenaline, people do say they are better, personally I'd rather use the extra cash and spend it on bits to improve something cheaper.
ask around Wdp or other shops for seconds they normally have no visible signs on them but are a lot cheaper aswell. try Paintball World in Nottm.
Bif