I dunno how LCD can actually produce heat.
Anyway, between LCD and Plasma i would go for Plasma.
Dead pixels in LCD is a whether it will happen or not at all.
Usually if you manage to remain dead pixel free in the first 1-1.5
years, usually the screen will not get dead pixels.
Dead pixels are due to the manufacturing conditions.
Be sure to ask about their dead pixel policy when you decide LCD
screen. As in, how that brand defines dead pixel or as to what
degree they will replace the screen for you. Some brands are known
to claim dead-pixel warranty but when it comes to actually
servicing, they will claim that some dea pixels are actually not
dead but just "off colour".
Some will not service the screen if your monitor only have 1-2 dead
pixel.
My advice is that you go for branded LCD at the moment. They are
really scared of people claiming dead pixels as replacing the
screen cose almost as much as the TV itself.
For electric consumption, the typical 29-34 inch LCD is rated at
30-40W. This means you need to pay 20 cents per 25 hours of use
(assuming electricity is 20cents per kWh. Currently it stands at 18
cents).
Plasma TV is IRREPAIRABLE once their lifetime is over.
Heavy users usually experience breakdown after 3-4 years use. Take
this into accoutn.
