Martin Logans sound great, until you move around the room. The sweet spot is so small that they would never be a choice for me unless they were going to be used strictly for 2-channel music. Sorry, I have no experience with JMLabs.

Consider the 30 day trial and give the M80's a trial in your own home. I recently had my Axiom system shipped FedEx overnight to Kansas City and it was $58 dollars to ship the M60's or $118 for everything.(I ended up having all of it shipped). Mind you that was overnight costs...shipping via ground is considerably less. I suppose it all depends on how far away you are from Axiom.

As I see it, the return shipping is a small price to pay for the peace of mind you'll have knowing you can affordably send them back if they are not to your liking.