The one thing I feel really, really,..uh,..really bad about, Sean; was not taking the chance a few years ago to audition all three of the "competing" floorstanders at the same time in my home!! I'd have loved to have the M40, M50 and M60s there to line up next to my M3s!

But I missed my chance!

I'm guessin' that, from warmest to coolest, that the M40 would have been the warmest and most "Tube" like, with the M3, as I found in my home; just about neutral, with the performers almost exactly at the speaker plane. And then the M50s I notice to be just a tad more foreward from the M3s and a bit closer to my understanding of the M60s; moving a little more foreward and cooler yet.

You're right though! It's great to have a choice within the Axiom framework of similar sounds! No lack of family resemblence here! Ya can't go wrong at that

And John is also correct with his A, B, and C "feelings" anallogy! Varying degrees of all three at different times and differing intensities!

It's been(and IS!) a fun trip!
Rich.