BP;
I think these two receivers are quite comparable and while some prefer Denon over Yamaha and vice-versa, one would be hard pressed to find any differences in sound quality and performance between the two.
With this in mind, I believe the 2600 may have a better video section and can be found a bit cheaper than the 2807, but if all things are equal (price, warranty, etc), I think you'll find either of these to suit your needs.... -TD