I have the 4306 and have only had it up and running a couple of days, I can tell you from what ive seen so far its a keeper. I dont know anything about the other Denon. I need to get my sub to get the full effect, it will be here Tuesday.

2-M80v2 VP150 4-QS8 EP500 DENON 4306 Panny AE900 Toshiba HD-XA1/PS3