The Denon is less expensive and is 7.1, the Arcam is 6.1 People may disagree with me here but I have a 7.1 Harmon Kardon and a 6.1 Marantz, so I am running 13.1(just kiddin). I prefer the 7.1 for movies personally even though I've never heard a true 7.1 DVD (not even sure they exist) The Denon will set you back $5-600 and will probably sound fine.
