If you can afford it, order both the M60s/M80s do a comparison and send back the pair you don't want to keep, or if there happens to be an M80 or M60 owner nearby ask for a demo and order the opposite set of speakers and compare them to his \:\)

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70