I just upgraded from a Wd-73831 to a wd- 73833 dlp set. This happened by luck more than anything. A couple of weeks ago I bought a 73" mitsubishi Wd-73831 but when i got it it was damaged. To make the story short after paying a restocking fee for the damage tv I got a Wd-73833 model and still kept the damaged model. Well during the time i was waiting for my new model 833 i was using the 831 to watch my blue ray, hd fios and xbox 360. I enjoyed every minute even though the top of my 831's screen had a black recktangle across the display. The picture look liquidly perfect. when i finally got my 833 model i was very excited. this was a bit more sophysticated than the other. it came with hdmi 1.3 and the turbo ligth system. To set it up, i used the same hdmi cables i used in the older model. When i finally turned on my new set while using the blue ray (SAMSUNG BD-P1200 Blu-Ray Player 1080P & HDMI 1.3 ) Which looked terrific in the older 831. I was a bit disappointed. The picture quality looked good but not as good as the 831. I wonder if i have to use hdmi 1.3 cables to make the picture look better or at least as good as the 831 model. Any suggestions?