Plasma TVs are lit by Phosphorous in the screen and don't need any backlighting, because the Phosphorous lights up itself (with a little help from a lot of integrated circuit technology). LED (light emitting diode) screen are usually backlit. Personally, I prefer LED TVs because I believe that the overall screen is brighter than Plasma; however, some plasma TVs automatically adjust the screen brightness based on how bright your room is. Also, an LED TV of the same size as a Plasma TV is lighter in weight, so easier to move around or mount if you want to mount it on a wall. I bought a Samsung 32" LED TV and I am very happy with it and I think if I bought another TV for another room, I would still go with a backlit LED TV.