If you do decide the M22s are too big, consider M2 in preference to M3, to substitute. I'm using M3s as fronts in one of my rooms, and have come to think it was a mistake not to get M2s instead, which match up better with other Axiom speakers.

Greg
VP180, M80s, M22s, QS8(4), CSW S305s, EP500, Pioneer VSX-90
M2i, M3(2), Pio vsx-1020