I am currently using M60s as mains in a 12x12' TV room in the basement. I love the detail at any volume level. I can't imagine getting any clearer but it could be the old "don't know what your missing" syndrome.
Murph, you know how the M60s open up at high volumes, they get more spacious and open, I would say even a little more cleaner/forward sounding, at least in my time with them they did to me, that is what the M80s sound like all the time.
Once I stopped comparing the M60s to anything I started to really like them and would forget about the sonic differences it has to the other speakers I compared it to, but once the M80s showed I quickly remembered why I wanted them.
