@allenJo - Plasma is no longer the “in” thing. Now they have LED (light emitting diode) television sets, where the pixels of the screen are basically made up of little lights. This is supposed to be the optimal technology for high definition television, and as a result, prices for plasma television sets have come down in comparison.
The LED sets have a deeper contrast ratio in the picture (the blacks are richer, and the whites are whiter). Another advantage of the LED sets is that they are supposed to be energy-efficient, so you should be able to get your money back over time. It’s just a matter of personal preference I guess.