These are the specs of my current system. I'm looking at either the M60 or M80, but I will not be adding an amp to them.
Room Size: 20L x 14W x 8H
Receiver: Yamaha RX-V2200 (6 x 100w)
Center: Bose VCS-10 (100w)
Mains: Bose 701 (200w)
Rear: Bose 301 (150w)

Receiver: Yamaha RX-V2200
Main: Axiom m80
CC: Axiom VP150
Surround: Axiom QS8
Sub: SVS PC13-Ultra