My own testing of the M22/M60/M80s had the M22s most detailed/less bass, the M60 did it all very well and the M80s more detailed/open sounding with the best bass. They do it all very well at all volume levels. I found the M60s to sound very similar to the M80s at the SPL you are asking about Captain. The M80s have better detail at lower volume levels.


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