Consider either last year's Denon AVR-2112CI or the new 2113CI as the best bang for the buck Denon models. Review the first couple of posts in each of the Owner's threads linked in my sig for a comparison of the various models.
I picked up a Denon 1713 and am very happy with it, I also have RF62's and it drives them very well. It's a 5.1 im not sure if you are looking for more, but they have better ones in their lineup obviously. Very happy with this year's line.
These days I wouldn't count on an AVR lasting much more than 4-5 years in order to keep up with HDMI changes, especially with the next change to HDMI 1.5 (or 2.0) due out sometime the end of this year.