Not directly, but I ended up buying the Onkyo 709 and absolutely love it. I also own a Denon 2112 in my living room system, so I'm familiar with both. (the 3312 is similar to a 2112 with pre-outs) I prefer the Onkyo's GUI, relatively straightfoward menu system, and ability to tweak settings while watching movies or listening to music.
It's hard to compare the sound to my old Denon 2307CI, however, because the Onkyo's Audyssey implementation made such a huge improvement over the older Denon's non-Audyssey room correction. I can't think of any feature of the Denon that is not available in the Onkyo and the Onkyo was significantly cheaper than the Denon 3312. I'd still go with the Onkyo I had to decide again!