I personally don't care for LCD projection TVs, the bulb averages a life span of approx. 2.000 hours about one and half years of normal usage of the TV and they cost about $ 250 each.
One of the things that disturbs me is the noise coming from the cooling fan, especially when watching a quite scene on a movie.
Plasmas on the other hand is not a bad choice but they're still so darn expensice, especially the 42" and 50" HDTV resolution.
Check out the LCOS HDTVs coming down the pike, they are much less expensive in comparison and they deliver a brighter picture with a terrific color reproduction and best of all the price is half as much as the Plasmas.
If you want to read more about LCOS technology from "Intel" go to
www.google.com and search for LCOS Technology, you will find articles fron Intel and other sources.
Mr.T