dharmatone,
From what I've read/heard, very few classical music listeners complain about the alleged "brightness" of the Axioms. Although I don't subscribe to the thought that there are different optimal speakers for different genres of music, it is true in my view that serious classical music lovers tend to desire great details in reproduced sound. In addition, good classical music recordings are almost always sonically neutral -- no "hot" voicing seen in some of the mainstream pop/rock recordings. The Axioms are notoriously honest in revealing these hot-EQ'ed recordings, which you don't seem to listen often...
I bet it is unlikely that you will find the M60 (or other Axioms) too bright.
