In the future I am looking to upgrade my system from my Yamaha rx-a720 to something with more power for my setup. I have RTIA7 fronts, CSI 6a center, and FXIa6 rears and a DSWPro550wi sub. I made the mistake of buying a AVR with no pre outs. Does more power accenuate the sound quality in all volume ranges or just part of them? Also would I be better to buy a HT Pre/ Post system vs a high powered avr? I oooked at the UMC 200 Emotiva and XPR 5 amp. Has anyone heard anything about their XMC1?