Plasma all the way. LCDs if you want something small like 32" or 37". Gaming on a 50 or 60" plasma is brilliant. Plasma wins for these reasons:
-No motion blur: Plasmas typically have a very short response time, which measures even less than 2 ms compared to LCD's 8 ms.
-Colors: Plasma can reproduce the whole color palette faithfully in respect to the original image. LCDs tend to lean towards blue, and cannot reproduce pure reds.
-Blacks: blacks on a plasma a always deeper than LCD's blacks, because of the fact that plasma's pixels (the individual dots that makes up the image) can turn off individually, whereas LCD's cannot turn off each pixel alone because of the backlight that should always be on. This means that dark levels in games like the darkness or gears of war have really good detail in them.
-Lifespan: the new plasmas can last 100,000 hours before their brightness is decreased to half, whereas LCDs last only 60,000 hours.
-Safety: plasmas are gentle on the eyes, unlike LCDs, which are proven to double your blinking rate after long sessions of watching.
-Natural picture: plasmas have a very true to life image that resembles the screen in the theaters.
-Large screen sizes: plasmas are found in stupendous sizes like 103".
-No input lag: Some LCDs have input lag, meaning that the button that you pressed on your controller appears late on the TV. This can seriously affect your skill.
*please note that I am talking about the best plasmas.
Please ignore the people who tell you that plasmas have burn-in, because that is not true with the new plasmas.
I recommend a Pioneer Kuro 8th or 9th generation or a Panasonic Vier 11th generation. They are the two best TVs on the market.
LCD technology is a disgrace, and it is very limited.