I am need of a quick decision. It has now come down to the Onkyo 501 or the Denon 1604. I really can't find any differences in them besides i can get the 501 for $182 shipped or the 1604 for $222 shipped. How is the sound with the onkyo? I will be powering Klipsch Rf-15's, rc-25, and a dayton 10" sub. Will it be brighter/warmer/or neutral than the denon or are they similar?? Thanks in advance......