Believe it or not, as good as the M3s sound... put the M60s beside the M3s in a 25 x 25 room and the M3s will sound small and boxy. I went through the same revelation with M2s => M60s.
Caveat -- if you are sitting fairly close to the M3s and don't need to play too loud they will be mighty fine. If you want to fill the room with sound you're going to be really surprised how much more open the M60s sound.
Just keep them a couple of feet away from the back and side walls... oh yeah, and ENJOY !!
M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8
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