I would say there is a very subtle difference between the M60 and M80 for movies; during my A/B testing I prefered the M80 due to the cleaner/forward sounding midrange, better vocals etc. THIS WAS ALL WITH V2'S SO ymmv.

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