Leggaire,

the M80's sound much like like the paradigm reference studio 100's.

to get similar sound with B&W you have to pony up about $5000 and buy the 703's.

The least expensive amongst the three is definitely Axiom, and their customer service is the best, and they sound very closely to one another. I can't really tell you how they differ because I never heard them side by side, but they do have, if it were possible to quantify, the same quality level of sound.