I can get these models at essentially the same price (Denon AVR1604 is $175 and Onkyo TX-SR502 is $180, both refurbished) and the only major feature difference I can see is that the Onkyo does component switching at 50mhz and the Denon is 30mhz. Seeing that I don't have HDTV yet (but will have a 480p display soon) I'm not sure this matters too much, plus I would probably want to run HDTV right into the set in the future anyway. The Denon also might not do DTS 96/24 and the Onkyo does...both are 6.1 channel receivers but I'm not sure if I will go above 5.1 just now. I could also get the Denon AVR485 for just a couple bucks more, which adds DTS 96/24 but loses 2 digital inputs. For some context, I just moved and am rebuilding my setup from scratch aside from a pair of Paradigm Atoms. I'm living in an apartment (so a "midnight mode" feature might be desirable) on a budget. So, does anyone have any advice? I'm sure both are fine units, but I need a little push. New suggestions are welcome too. Thanks for any help!