John,
I am chuckling at your explaination of the size of the M80's. When I purchased my M60's, the wife was allowed to select the custom finish. After they arrived, were set up and producing that wonderful Axiom sound, my wife say's "they sure are a lot smaller than the old speakers". Well, my old tower style speakers were 4 feet tall by 1 foot wide by 1 foot deep and weighed about 125lbs each! She figured that it was a 'win' on her part getting smaller speakers however I ended up with what I wanted without any negotiations.
Cheers,
Shaun