Looking for opinions on Onkyo TXDS797 or Denon 2802. I can get a good deal on both units and am going through a debate of which one I want to get. I have listened to both units and am going more towards the Denon 2802. I am not able to do a good test demo of the Onkyo because of the store's setup. However, I am sure it is a great piece and THX EX is tempting me to give it a try. And I can get the Onkyo for $100.00 less than the Denon too. Another reason. However, can anyone here give me an opinion on how the Denon's matrix back surround channel sounds with Dolby Digital titles?