I think that you should also consider what center you are planning to get. I have the VP180, and it is a horizontal M80, sounds as sweet, and requires as much juice.

I suggest that you match the amplification of the M80 to the VP180 if possible. Listening to music using my setup is more of a pleasure than ever.

Tariq

M80v2 - VP180 - S:QS8 - SB:QS8 - SWide:QS8
Denon 4311 + XPA-3
Sub: Dual SVS Ultra-13