I'm surprised that there wasn't any mention of the new Denon receivers announced yesterday and as detailed here.
I was looking into the Polk unit for XM at home....maybe I should take a hard look at the features of the new 3806 (which includes XM capability built-in) and consider upgrading my receiver instead. Seems like I just bought my 3805 though!

::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab :::::::