Those receivers are completely different. The 2809 might be more comparable to a 706 or 806 methinks. The 876 has a lot more in terms of video processing than most receivers. You'd have to jump up to the 5308 in Denon's line to even begin comparing VP.
However, I'd reconsider your budget, and spend more on speakers/sub, and less on electronics. Just make sure whatever you choose has preouts on the receiver so that you can add an amp if ever necessary.
However, I'd reconsider your budget, and spend more on speakers/sub, and less on electronics. Just make sure whatever you choose has preouts on the receiver so that you can add an amp if ever necessary.