I did lots of a/b comparing of M60's to various Paradigm speakers using the stores high end electronics and theater room. I found the soundstage and frequency response, as well as price to be hands down better with the Axioms.
The newer Paradigms are no doubt better that the generation from 5+ years ago, but in looking at the spec sheet, they still only reach to 44 hz, while the M80's you are considering will extend to 34 hz.
I think you should try to listen to them both side by side before you choose. You can always send the M80's back if you aren't completely satisfied. Honestly, if price to performance ratio and value is important, go with Axiom!
