Well, my sub amplifier was fixed and I received it today. This evening I set it up in my 1925 cu ft room (with cathedral ceiling). The bass was overwhelming leading me to believe perhaps the 80's too may: 1) not have enough room to perform to its potential since there isn't sufficient separation from the side and back of the wall for it to breathe...2) It seems that I'd need to purchase an upgraded receiver for about $530 to drive the M80's and 3) most comments seem to be on track and consistent with A/B comparisons of M80' and M22 w/sub as being pretty equal. So I think the best route given my listening space is te3 M22's with a sub. My existing sub even he amp was fixed today blew a crossover circuit and made a sound that scarred the hell out of me this evening. And I am not as satisfied with it as much as I once thought. So my next questions are: Ho will the M60 perform it terms of a decent bass range and would it work well in a 1925 Cubic foot room adequately?