I am looking for a new HDTV. It will be in a relatively bright room with a need for a wide viewing angle. My choice is a Plasma TV for these reasons. I have read that there are burn-in problems and potentially bars that are formed based on various formats of programs (wide screen vs. standard). I would like to purchase a 50 inch Plasma. The investment at this level is pretty substantial. I would like advice on how to select a great HDTV and things to watch out for (like burn-in). Thoughts?