I re-read your message - one downside to the M-22s is that the stands are not that great. I would look for stands from another source if I went for the Revels.
As for an amp, I would go for something in the 100+ w/ch range at least. I'm using the new Onkyo A-9555 (85 w/ch) and really like it with the Revels in my 12x14 room, but with a larger room I might look for something with a bit more power.
As for an amp, I would go for something in the 100+ w/ch range at least. I'm using the new Onkyo A-9555 (85 w/ch) and really like it with the Revels in my 12x14 room, but with a larger room I might look for something with a bit more power.