I'm posting this follow-up to help anyone else who might be trying to make a similar decision. I finally cracked open the AVR-2805, and hooked it all up, and I must say, although the specs are similar to my current AVR-3802, it sounds NOWHERE near as good.
The 2805 (during movies) had more detail, but not as clear as the 3802. The sounds that came out of the speakers seemed to JUMP out a little too much for my liking during both MUSIC, and MOVIE sound...almost to the point of being distracting.
Also...the menus DO show via component inputs, but the picture doesn't play in the background, which is fine. I wanted to replace my 3802 because it WOULD NOT show the menu AT ALL via component cables.
I am taking the 2805 back tonight, and probably not trying the 3805, as it looks to be basically the same. I may try an upper-end yamaha, or possibly wait a few more models for Denon to get these receivers back to being outstanding!
As a side-note, I purchased a Harmony 688 remote control, and set up an "activity" (macro on other remotes), that basically hits picture-in-picture and shows video-1 when I want to configure my receiver. That way it pops up the denon's menu in the pip window, allowing me to see the menu. (by the way...that remote is ABSOLUTELY AWESOME!!!)
If I try another receiver, I'll place yet another follow-up. Otherwise, I'd be interested to hear how different the 3805 sounds to the 2805 (or 3802), as I have heard many conflicting reports.