I need to pick up a new AVR receiver for my home theatre and there is just to much to choose from. I absolutely must have QUALITY sound so I am hoping you all can give me some suggestions.

I currently have the Denon AVR 3600 and 3 of the top the line Yamaha AVR's. Is there anything else out there that I should be looking at? I really dig the Denon and Yamaha stuff but maybe I'm missing something?