I just went through with this deal yesterday. I was considering getting a 1909, but I wasn't having any luck finding one /cheaper/ than this price for the 790 at Us Appliance. Apparently they really are an authorized Denon dealer.
I hope that this was a good price is enough to keep Gary from yelling at me for buying it.
I'm going to pair it with a 400 dollar 5.1 Energy C-50 surround system, plus two additional C-50s to produce a 500 dollar Energy C-50 7.1 surround system. The speakers are an okay size, and won't dominate my humble middle class suburban living room. Also, The Wife firmly said that I could only buy speakers /once/ in the next five to ten years. Seemed like a good fit for my budget, which was originally going to go towards an Onkyo 7100 home theater in a box. To the Audiophiles: I'm sorry that I couldn't match this 400 dollar reciever with 4000 dollar speakers. ... Tongue in cheek, please don't hunt me down and garrote me.
This has the features I want: 7.1, runs cooler than the Onkyo sets, auto speaker set up, Dolby Headphones, etc.
Anyway, I'm sure I'll be back later with impressions once I've set it up.