Lol at all the LCD comments.
Almost all professional TV sites have agreed Plasma has better picture quality. They have deeper black levels and in general look more like theater viewings while LCD has is just a lot more bright.
And yes LCDs look better in stores due to the setting plasma are on and the shiny lights beaming at them.
Only thing LCD has over plasma is less image retention and better for viewing in brighter rooms due to the glare plasma can have from sunlight.
If you want an LCD equal to that of the Panasonic plasma you'll be paying about 400$ more. And plasmad tend to have less input lag when playing video games than LCD.
Oh and everytime I say LCD, you can replace it with LED if you want. The terms are swappable in this post.
Just read this: