[QUOTE=kexodusc]I could be wrong, but I believe the 750/650 models from Yamaha will only output to the "presence" speakers OR the surround backs (6th and 7th channels), so that might rule it out for you.

Have you heard the presence speakers being used before? I'm not sure if they make much of a difference but since I have extra speakers and the wires there, I thought I'd try it. My room is only 14 feet wide and I can't wire the back wall for 2 surrounds so I'd have to stick to 6.1.
Also, no authorized dealer will sell the 750 online that I can find. (the ebayers will!).