I have a wife that doesn't like anything played loud. I can only play my AVR307 at -20 max or else she tells me to turn it down. I'm interested in upgrading to one or the other because of the price drop, additional functionality, and the remote control - in addition to the fact I can change to the Silver color. The AVR 507 has 150 Watts/Channel and the REF50/200.7 has 200 Watts/Channel. Any opinions as to which set-up would be better? There is a $2,500 difference between the two solutions. I have B&K 803's for fronts, 804's for rears, and HTM 1 for my center. Looking at B&W ASW 850 for my sub.