My vote is for Denon 3808. I don't know the specs on the 2900 series of Denon's, but 3808 has MultEQ XT (Audyssey). Having tried both MultEQ and MultEQ XT, the extra filters on the XT version made a big difference for me.
I just started using Internet radio on the Denon and it worked really well. I was pretty surprised how well it worked. I was able to listen to Korean stations with no issues whatever.
The ability to save off configs via the builtin web server should not be overlooked (if you like to tinker).
You can configure just about anything you'd like on the 3808 and it's a nice system.
But if you're not going to buy it for another 8 months or so, wait and see what comes out. If nothing else, the 3808's will be that much cheaper.
