Hi guys! I am considering jumping either on Marantz AV8801 or Yamaha CX-A5000 processor this autumn, but before I do, I would love to hear about people experience with their options for "expansion" to 11ch sound. Both DSC and Presence, seems to do something similar, but I am a bit worried that Yamaha's solution will add to much "reverb" to the sound field - especially if it "messes" with the centre channel also. If anyone have experience with both system, I will be a happy listener. Cheers!