I have to agree with what tomdkat said, new Pioneer receiver models are definitely coming very soon that will have cooler features, all the newest high def audio decoding, and 1.3 HDMI switching. As pretty as the 82 is I'd hold out and get something that will really knock your socks off!
Definitely go for the new sub! As an owner of a Martin Logan subwoofer (Descent), I can easily say that they kick ass! I have never heard the entry level ML subs, but if it shares anything in common with the flagship Descent, it's the one to get. ML subs are often recommended by installers to people who don't even own ML speakers. That says something.
But the only way you will know for sure is to get that thing in your house and try it out in your room with your system. But I can pretty much guarantee that you're gonna' love it!
Seth