To be honest, CRT is dead. You'll have real trouble finding one now, although there may be 1 or 2 stuffed in the back of the showrooms. Flat is king!
I personally believe plasma is better than LCD, and have always had plasma (LCD flamewar starts

). Plasma screens have better colour reproduction, better contrast, and are much more filmlike in their delivery of an image. LCD's tend to look overprocessed with a flat image to me. Plasma screens *can* suffer from screen burn whereas LCD's generally don't, although if you careful running in a plasma for the first 100 hours or so, you should be fine.
If you after the latest 42" Samsung plasma, that would probably be the PS42Q97HDX that's getting all the good reviews. It's the one I'm planning to get actually, and the screen shows hardly any reflection at all, even in direct sunlight (apparently).
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