Although I don't like speaking for others, by hefty amplifier, I presume he means something capable of driving your speakers cleanly to harsh listening levels, so, say, a true 100 wpc.

Any of those receivers will drive M22's or M60's to very high levels, upper 90's in decibels.

I currently have M80's, but used to own M3's and M22's. I, too, live in Montreal on the Plateau. Should you want to hear what Axiom can do, PM me.