I haven’t’ heard M60’s, I have the 80’s. Axiom claims that they sound the same.

The 80’s are more forward/detailed/brighter than the B&W’s. If you like that laid back, less detailed, warmer sound, you may not be too happy with the 60’s or 80’s. The 50’s are supposed to be a little more laid back. As others mentioned, the shipping is free and you have 30 days to send them back if they aren’t to your liking. But that being said, I didn’t think the B&W’s were all that laid back and warm. I thought they were a fairly forward speaker. Paradigms were less forward to me.