http://www.flatpaneltvinfo.com/Plasma_vs_LCD_vs_LED-LCD.php
Suggestion:
Plasma TV's work a lot like the old Tube TV's did. The have near instant pixel response time and work well in most environment with the exception of brightly lit rooms. In the past, they have had trouble with burn in but the plasma folks say that is a past issue.
LCD TVs have backlighting. As a result, they struggle to get true black colors on the screen. They work very well in brightly lit rooms. They also sometimes struggle to get the LCD pixels to respond fast enough for action movies and the like. This is why you see them advertised as 120 Hz and 240 Hz. This tech might make the TV respond better to sports or fast moving movie pictures but it often makes them look video game like. A 240Hz TV showing a Hollywood movie has only one original source frame for every 10 displayed ones. The other nine are generated
There are two types of back lighting for LCD… what amounts to a Fluorescent bulb and LEDs. LED's come in two flavors. Edge lit and back lit. Edge lit results in the thinnest displays out there but do not adjust the brightness of the LEDs. Back lit dynamically adjust the brightness of the LEDs to the type picture. This increases the contrast ratio by making the blacks blacker. The problem is stuff like the opening scene of StarGate Continuum. It is a big star field. Because the back lit TV's turn the LEDs nearly off for the space, you can't see any stars. Ooops.
Which is better really depends on your situation and budget.
