77? How big is your room? I've got a 55. The way the room is set up we are watching from 8 to 12 ft away. Any bigger I think would be too much. Originally sized the center cabinet for a 25. Later expanded it for a 51 projection. That had wide borders, so I was able to put the 55 flat screen in its place. Probably could have gone to 58 max now since the new ones have almost no frame edge, but stuck with 55 when I just got a new one.