The idea of an M22 for a center sounds great with the M80s. I was thinking of wall mounting the M22 above my TV screen if I went with that setup. It does not seem like the ideal height for speakers to be located, but will that work?

If the M2s work with the 80s, I would be interested in that very much. I would just wall mount my TV and place the M2 on my TV stand. The M2 would definitely be dwarfed by the M80s in appearance, but I am more concerned about audio quality than I am with looks.

Speakers: Energy RC-70s, RC-LCR, RC-Rs and eD A2-300 x 2.
Receiver: Marantz 6006