I love my M60's.
There is broad consensus that the M60 is - by far - the best looking speaker Axiom makes.
Why don't you get ALL those speakers, set up a proper double-blind testing environment and report your results? I think people would really appreciate it.
First off - there is no such thing as overkill. Of course in an apartment, you could probably get arrested for disturbing the peace.
Second off - Tom is the wisest man on the forums. Do not listen to the M80 crowd.
Third - Assemble those speakers and you could sell tickets around here to the audition. May even cover your cost.