Has anyone had the opportunity to compare these two receivers? I'm getting ready to upgrade from a Denon 5700, and I want to make sure I make the right decision. The Pioneer is an attractive choice as it can be found on-line for about $500 less than the Denon. On the other hand, I have been very happy with my 5700, so choosing the 5803 also seems logical. I will be using this receiver with Atlantic Technology System 350 speakers and a Panasonic RP91 DVD player. Thanks.