I'm a strange case as I live in a small apartment (400sq feet including bathroom, closets and kitchen), but I have

M80's
VP150
QS8's
EP350

the reason why is these speakers will be with me for 5 to 10 years and i will eventually have a large place. There's no harm in having a speaker that is too big (you can jsut turn the volume down). But a speaker that is too small will sound thin.

I am running a Denon 1602 to power these speakers. Its newer model (1604?) retails for maybe $600 CAD. I have NEVER experienced a circuit shutdown even if I play the M80's set to large for a few hours. (that means all bass will play through themain speakers. a Small setting sends bass below 80hz to the subwoofer).

M60's and M80's do sound almost the same... and they sound absolutely amazing. The B&W equivalent costs about $5000.