My reply from another post:

I use 5 M-200's in my set-up. The advantage for me is that I can split them between two racks with the stereo pair near the front speakers and the other three on a seperate rack. It also allows me to only run the front two channels when I listen to stereo and only fire up the center and surround channels when necessary. Not really a big deal compared to using a 755. the other reason I am using the M-200's is because I received my first one free in the Outlaw's contest