joeboy:

I am running an identical setup, except through NHT VT-2/2a, HDP-2 dipoles and super zero rears. I too was suprised at the improvement over the 750 (which I didn't think was too shabby).

The M200's are very quiet, and the stack of two runs very cool.

Question for you: Does your 750 hum slightly (through the speakers)? Mine does, and I was suprised at the total lack of hum from the M200's.