After demoing both these amps i am none the wiser, it seems impossible to get a back to back demo to get a true picture. I demoed the Denon on a M&K k3 system and the Onkyo 797 on a boston system. Both in completely different rooms. Both dealers said that they could get me the other amp but only to buy. I dont think there will be a huge difference in the amps it would just be nice to get the opinion of ppl who have manged to get a decent demo. I am purely interested in Movie playback. Thanks in advance for any input.