I finally purchased the Sharp Aquos LC-37D43U.SD does not look as bad as I thought.I have an older surround sound with no HDMI input.For now i connected the upconvert DVD to the TV via HDMI.Should I run all my audio and video( from the cable box,dvd ect.)to the to the TV and then to the reciever via digital optical audio,or just run them direct to the receiver.Does it make a difference?