I actually listened to both the Denon (with its internal amps - and also as a pre) and the Integra 80.2 (in the end, as an Onkyo stand-in), but couldn't offer a meaningful comparative judgement, because it was different dealers, rooms, systems, etc. I will say that both sounded very good in their respective systems.
I chose the Onkyo/Integra route because balanced XLR connectivity is important to me (I use an ARC VT130SE power amp that only accepts a balanced input). I ended up buying the Onkyo rather than the Integra based on the advice of a (trusted) local service tech who does warranty repairs on both brands. I concluded that he had more experience in direct comparison than I could ever achiveve thru auditioning both of these units at their respective dealers.
Marty