We don't have a dedicated HT room yet, so there is nothing to change. Otherwise, I'm happy with the equipment that we have now, aside from the display. The only thing I intend to upgrade is the subwoofer, possibly with a Rythmik Audio 15" Servo kit (
http://www.rythmikaudio.com/servo_product.htm), but I'm very happy with what we have at the moment. The receiver may see an upgrade at some point, should the lack of HDMI, DVI, etc... become an issue. The biggest thing I'm outright missing... a popcorn machine!