I own the Denon 3910 as well as the 2200, and to be honest I can't tell that much of a difference when it comes to picture quality . I personally think the 2200's Sil504 converter is actually superior to the dcdi by Faroudja used on the newer Denons.
I think your black levels on the 2910 will probably be improved over the 2200 , but other than that I really don't see much overall improvement in video quality.


A computer once beat me at chess, but it was no match for me at kick boxing.