I don't have M22s but have M60s. All I know is that after I switched from my NADs 70 watts/channel to two outlaw monoblocks, I noticed a distinct improvement in dynamics and 'punchiness' (forgive me). It was worth it. Although its a fine amp, I'm not necessarily recommending Outlaws, just recommending more headroom.

I know someday I will move up to a better amp and the best thing about having the separate amps is that in the future, I will move these babies to my stereo upstairs.