Besides the carpet and drapes the wife won't allow any specific room treatments on walls... So... Might have to be the standard M60s with the two channel system anyways. Shame. I wanted a really nice set of speakers to run full out with my vintage amp collection. Thought the HP would be the case... However, it seems that the room factors would be greater than the actual speaker type (at least that's what I'm gathering from all the great responses I'm getting here)? Hmmm...