With a properly dialed in sub, the M22's rival floorstanding speakers costing much, much more.

What type of floorstanding speaker are you currently using?

From what I've read, it seems that the M3 would be an excellent choice for two channel playback without a sub.

Or the M60 and up if your budget and room size allow.

"Art is making something out of nothing and selling it."
---Frank Zappa