Side bar:
I've seen many of the high end LCDs and Plasma's in action, and I'm also a fussy viewer when it comes to video broadcast. Friends used to come over to my house and watch my collection of Laserdiscs long before DVD's were a concept because the quality was a quantum leap over VHS anything. I've got 5 years of intense video analysis under my belt as well, so I'm fussy about picture quality.
In anycase, I've spent many hours playing Xbox 360 on 42" and bigger LCDs in hi-def, and there's no way I'd go back to standard broadcast console gaming. Sporting events broadcast in hi-def look incredible on my friends state of the art LCD's and plasmas.
However, all my DVDs are conventional resolution, and most of the TV stations I watch are standard broadcast. The best Xbox 360 games I've played don't improve much beyond a 27" LCD because they are only 720p and look heavily aliased after that. That being said, I've yet to see *any* large LCD or plasma display non Hi-Def video a fraction as good as my 31" toshiba conventional TV. The big LCDs are forced to upscale lower rez video to the point it looks fuzzy, distorted, heavily processed, and far worse in my opinion than watching that same video on a conventional set that doesn't have to invent information that isn't there.
That being said, other than for Xbox use, why should I buy a big LCD that has to inflate 400 something lines of resolution to a picture quality worse than VHS?
Otherwise, the most vivid LCDs I've seen, and closest to Plasmas in this respect are Olevia's.