I also was looking at those 2 receivers about a month ago. I went with the Denon, and after getting it home and playing with it, I can tell you the sound blew away my old Yamaha rxv995. The component video switching and bandwidth outputs helped me make my decision. Hope that helps a little.
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Sony KP-43HT20 43" HD TV
Hughes HIRD-E86 HD Receiver
Denon AVR-3803
Philips CDR 765 CD Recorder
Sony DVP-NS715P DVD Player
SF-2 Front
SC-1 Center
SS-1 Rear
KSW-12 Sub