M60s are a good choice for a good sized room!

If the room is big! Go with M80s!

If smaller, go with M22s and if smaller yet, try the M2s!

Simply a case of scale!

Probably the way to go since like over 80% of all axiom purchases are within this group!! And since it's the accurate Axiom "sound" that probably attracted you here in the first place....!!

Will the other speakers in your group(center, especially)match well enough?....dunno but they might! Having similar driver materials is a step in the right direction, but dosen't, of course, mean that both designers had similar thoughts when the speakers were put into production.

Anyway, the M60s, if your room size is appropriate for them, would be an excellent foundation for a great future home entertainment system!