Here put simply is the differences between Plasma and LCD
LCD's: Higher resolution (Sharper),brighter, non-reflective.
PLASMA: Faster processor for movement, (Smoother images) more natural colours (because of higher contrasts),and 3 dimensional look.
Similar prices now in 40" - 42" market.
In terms of energy consumption, LCDs use constant power, Plasmas fluctuate depending on whats on screen (Light or Dark?). What I've heard from diff sources, that over a year period, they both use similar amount of power!
Most people are buying LCDs, as with HD TV they look that much sharper, etc. If you are a sports fanatic, recommended Plasma still, because of lots of movement, but for general TV and Dvds and sports, LCD. Follow the trend!
Both are great technologies, just different!
Recommend: Samsung/Sony LCDs. Samsung/Panasonic/Pioneer plasmas.
Samsung make a lot of components and screens for other companies.
Hope this helps.