I haven't actually listened to anything but M2i's, but the gist of the reviews is that the M80s are a bit brighter than M60s, particularly in the upper midrange.
If you have owned all the other Axiom speakers I can't imagine they would have a problem with you trying out the M60s as long as you pack 'em up carefully if they don't work out...
I can't think of anything better than actually trying all these speakers. Go for it !!
JB
M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8
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