My choices are LED, LCD and Plasma.
LED is a good choice because it has the latest display technologies to produce better, brighter colors. But I have to say I didn't like the plastic look on the 40" Samsung but it looks ok on the 46" my sis has - go figure. Go big if you can for LED, I guess.
If you are not so picky about the black not being so black or can't tell the difference, LCD is a good buy nowadays cause the prices are falling like crazy. I think you can get a 40" Full HD for under $1.5k
Lastly, if you want to chance images burning into the screen, you can go for plasma as it is old technology and being phased out soon so the prices are crazy cheap. Not sure if they have fixed the problem so please ask before you buy.
The most important thing you need to ask yourself is what are you going to hook up to your tv? If you need a lot of RCA connections then you should stick to LCD & plasma tvs cause the LED tvs only have 1 RCA connector and the rest are all HDMI.
I would recommend Samsung, Panasonic or Sony as there are the top manufacturers. Not sure abt LG.