johnny24, I just purchased the Onkyo DS-TX797B and could not have been happier with the purchase. I have heard the Denon and it does sound fantastic but the Onkyo seemed that much clearer. The 797 will allow a greater flexability for system expansion IMO. It has 3 optical,3 coax, 2 wideband inputs and 1 output, a 6 channel input for SACD and other formats. The list goes on and on. Plus the 797 recognizes the THX EX automatically when you set up the inputs correctly. I did find the remote to be sort of cryptic at first but after reading about the connectivity it is rather simple. And the remote controls every piece of equipment I have.
At least give it a try, you will not be dissapointed.
2 '78 Heresy
1 KV2 Center
4 KG1.2 surrounds
1 SW-12
Thorens TD-124
Dokorder R-R
RCA DVD