I forgot to ask the most obvious question -- music or HT. For HT I don't think I would have bothered with the m60s, but for music it's REALLY nice being able to turn off the sub and just enjoy the mains.

Having said that, now that I have a decent AV receiver the M2 + sub combination sounds MUCH better on music than before. You know what, I don't think I'm really helping at all...

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8