People have suggested that my 2500 is good enough for the M80's-but I'm only planning on 5.1 and my room is much smaller (1500ft3). I'm not sure how different the 4600 is from the 2500 but from an amp standpoint I'm guessing not much. I'm planning on getting a separate amp down the road-which maybe you should consider if you are worried about power.
Anyway I've only auditioned the paradigms and I really liked them. I'm going to give the Axioms a shot-they were compared to the studio series paradigms but at the monitor price. I figured if I got the top end Axioms I wouldn't have upgraditis.
