I am an "expert novice" when it comes to home theater. Currently I have a three year old sony directv, but I do own a SonyXBR 400. I am interested in upgrading to a HDTV SAT receiver, but would also like to integrate PVR in the mix. Is there an all in one unit for this? Should I go with a direc/tivo and an HDTV receiver, or a HDTV SAT receiver and a stand alone PVR? I'm mildly overwhelmed trying to research all this and would appreciate some "expert" help.