My Panasonic TCP42U2, used, with I think channel guide burn in I didn't see at the seller's house*, the picture looked good - and it does seven years later. I can see the back-lighting, and the browser window and task bar burn-in from my use, when the image is blank, yet I don't notice these when watching programs. Arcade games look great - because the color palette is similar to CRT. Rich colors and hues. Pretty good black when displaying a null space. HLSL and png effects look good, though the former is necessary for those wanting a rougher look. Vector games look great because plasma is similar to LCD. Pixels, high definition, brilliant colors, great transparency. $400.
It took me a year or more to get the color scheme right for all things. It really pleases me. I have no intent on replacing it, though have eyed some things.
*wife and kids were out, and I helped him move his new LED LCD from his truck. Super light, but I encouraged his request for assistance.
I agree with opt2not in that the new LCDs I've seen (including the used, re-furbed Samsung on this system) have looked nice, and performed well so far or as much as I've known about their use. Color variation is bizarre, I recall reading, due to difference in source of raw materials, though I imagine each maker has their own color systems, etc....