Moostic...welcome to our humble forum.

The HK330 can easily drive all the speakers.....there should be no problems there.

As for the two speakers, I own the CMT-340, and have heard the M60 in my home, and at an Axiom owners home. With a sub, I think it is an excellent comparison. The midrange and treble are more to my liking on the CMT-340. Neither of the speakers are muffled.

Where are you located?....maybe you can find owners of both and get a listen.

-curtis