One last thought. The difference in the SQ is on both 2 channel and surround 5.1. It isn't about the loudness, although I can say that there is more available volume than before but that isn't my main concern. The difference is in the separation, imaging, depth (especially bass), just an overall stronger presence in the room. Look, I'm not an expert and really don't care about what the audio store had for sale. What I care about is that hearing a difference for whatever reason convinced me to do what I've been wanting to do for a long time-get some better equipment-separates to be exact!! And I'm quite happy and content with this change until I do my next upgrade on acoustics or whatever it might be. That's all that matters anyway, isn't it???