Is there really a comparison? Brothers under one company flag, but what do you really think? I can't find a review for either of these. Denon is the most reviewed AV receiver of the two brand names and fairs the best overall in those reviews. Another thing...is THX really that important? I have owned a Denon AV receiver for over 10 years now and it is in mint condition and performs like it is new. However I do recall the 70's and products like Marantz were considered top quality. So again what are we to think? Please let me know your opinions. Thanks