3805 is great, but.....
I love my 3805, but I eventually got too frustrated with the remote and got a Harmony remote instead - much more user-friendly. The Denon remote looked very cool, but that wasn't enough for me.
I have the Denon mic, but I haven't been in too much of a hurry to check out the auto set-up. I am very satisfied with my manual set-up procedure (RS meter and tape meaure). I also have read that the auto-calibration is over-rated. Just go through the OSD menu slowly, step by step,and you will become familiar with it. It's fairly logical. Good luck - it's a great unit.