I am in the market for a new AV Receiver. I currently own a Denon 3805. I have Klipsch KLF-20 Fronts, C7 Center KLF-10 Rear + Klipsch Side and Effect Speakers and a SVS PB-13 Ultra Sub. I am current looking at the Denon 4310CI & the Pioneer Elite SC-27. I have read all the specs and comparison lists for these two, and it would seem to be a difficult choice, both are great. I would appreciate any input or advice on making a choice. Does either unit have any real advantages over the other? How will the Pioneer sound with my Klipsch Speakers vs the Denon? The one thing I like about the Denon is the ability to have A & B Surrounds. Any info would be a help in making this decision. Thanks.