Check the Hearing Things forum, first sticky at the top, there are a couple of forum members there that could give you an audition of said speakers.

Otherwise the M80s are closer to the Studio 100s, the M60 are equivalent to the Studio 60's, IMO.

BTW, I was one of the people involved in the Monitor 11/M80 comparison and the differences were small but so is the difference between the Studio 100 and Monitor 11 when A/B'd

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