I agree a plasma is best in a room with no windows or light that may reflect on the glass screen. I have a Plasma in the Man Cave downstairs and a LCD in the living room.
The LCD screen will damage easier if something strikes it (kids playing with a ball etc).
Go to the big box store of your choice on a Sunday when NASCAR is on and look at the word banner that scrolls across the top of the screen to see which has the better picture and then decide.
Oh yeah, the LCD weighs 1/4 what the plasma does so that may factor into your decision as well if you plan on hanging it on the wall. It takes 2 people to get my plasma (42")off the wall if necc. I can literally pick up the LCD with 1 hand.