I have the Integra 80.3, which is like the 80.2 with a few more features. It is excellent, for both movies and music.
I have not heard the Marantz 7005. However, according to spec listings on the Audyssey site, the 80.2 has Audyssey MultEQ XT32 whereas the 7005 has Audyssey MultEQ XT, a step down. XT32 has 32 times the filter resolution for the satellites compared to XT, and 4 times the filter resolution for the subwoofer. For that reason alone I would choose the 80.2.
The following link has a comparison chart for the different flavors of Audyssey:
http://www.audyssey.com/audio-technology/multeq