Nice write up Bruno. Just remember, just because your friend is in music doesn't mean he hears things the same as you(his hearing could even be damaged?), as he said, with speakers of this quality you can't go wrong and you should feel very good about your choice.

FYI, a former active forum member's wife is a Cello player and she picked the M80s over the M60s as they sounded more real to her when we did tests with the M60/M80s \:\)

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