Lee, I wouldn't expect that there'd be any respect in which the M60s would be "fuller" except in the lower bass, together with an ability to play slightly louder with low distortion. As Alan has reported on more than one occasion, in blind listening tests with the low-bass factor equalized with a sub there's almost no audible difference up to quite high listening levels.
I also listen almost entirely to classical music and the combination of the M22s with the EP500 leaves nothing to be desired. A bigger speaker isn't "fuller"(whatever that means); accurate is accurate.
