Thanks for the response thus far! I understand the X1700 compares more to the 850 or 900, but I'm looking at buying the equipment second hand. I've seen the 800 and X1700 for pretty much the same price used (~$800), so I'd figure I go that route. Sounds like the Denon is the overall winner. I've been leaning towards the Denon, too, because of the Matrix input.
Thanks guys, and all opinions are still appreciated.
