I see many recommending plasma. You should consider that inch-for-inch plasma sets use more power and run warmer that LCD sets. If you are using it in a confined space where heat and ventilation may be an issue, or if you're into green technology, you should consider the merits of LCD.
the power consumption issue is only relevant on older plasma sets and possibly certain cheaper brands.
Most of the current gen plasmas have come down a lot in terms of power consumption. (Even compared to last years models.)
IIRC, California is supposed to be enacting rules that will require TV sets to be even more power efficient. Most of the big brand name plasma makers have come out and stated that they are working on new technology to meet those requirements.
There are a lot of review sites that have tested power consumption. If it's an issue for someone, then the info is out there to compare. When i was looking up info last year, the difference between LCD and plasma was not too far off. This years models should be even closer.
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In regards to comments about screen glare.
There are a lot of glossy LCD screens out there that will cause the same amount of problem. If screen glare is an issue in your viewing environment, then do your homework on a case by case basis rather than generalizing Plasma vs LCD. Plasmas have definitely gotten better, but there's a limit on what the screen coatings can do in a really bad environment that doesn't have good control of the light in the room.
In my case, I was able to angle the plasma a bit more for better daytime viewing. Plasma brightness continues to increase every year, so that might help offset some of these problems too. Even compared to last years models.
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Overall... the difference between plasma and LCD has narrowed substantially. Plasma still seems to have a price advantage for the time being, but i expect that disappear at some point.