My previous plasma TV used to sit in my basement for more serious movie watching and the picture was excellent. I have since moved and the TV is now in a large brightly lit great room with lots of incoming sunlight.
This is not meant for serious watching but the screen is very reflective and the colors washed out. It's very hard to see much.
I've read some online reviews of TV that are good in bright rooms but haven't been impressed with ones I've seen in store. My budget is $900-$1500 for something 50"+.