Go plasma every time.
In a test, over 60% of viewers of two tv's , plasma and LCD, chose the plasma picture as the better of the two.
The thing is that the Light Engine technology gave a breathtaking picture.
In about a year from now, Sony are not even going to support it. Source, my conversation with Sony customer care.
Plasma: I've heard stories about people running a no-signal snowy screen to get rid of burn-in. Has this been fixed, or is it still an issue? If Panasonic are going to commit long term to the technology, then that's fine. But I brought my set partly because it was a Sony, and second generation at that. Who would have thought it would be irreparable in two years?