@just4kix and Staxxx - I actually don't have any idea on how these TVs really look. My comments were solely based on my one time demo at shops and various calculations based on numbers (luminance values) and highly reputable website reviews.
I had watched these TVs only once.
First was UT50 - i was thinking it was great when watching the clips that I had took with me. But then I asked the shopkeeper to keep the same channel on all TVs. To my surprise, the lower rated LCD TVs looked noticeably better than the UT50.
Later when asked about that in this forum and learning from other websites, realized it was solely due to the REFLECTION from shop lights that the UT50 looked dull and blacked were greyed out (worse than LED).
So I was convinced that, if I buy UT50 and watch at my home, I wouldn't have that problem. cause my usage being completely in pitch black room.
But upon further digging, I came to know about the numbers - brightness levels, these displays could produce. Plasmas struggling to hit the 120 cd/m2 whereas the LCDs easily hitting 250 cd/m2. (A normal LCD monitor like DELL SP2208WFP, samsung and whole lot of other monitors produce this level of brightness, based on CNET reviews). And I realized, I always have kept my monitor brightness at maximum and while watching movies, I 'kind of' craved for more.
Of course, the downsides of producing a brightness of 250 cd/m2 by LCDs are abnormal color rendition, poor black levels (in fact they are grey, not black) and so on...
But a normal guy, a non-videophile, is not affected by this disadvantages in anyway as long as high pictures looked bright and good. For Ex: When a non-audiophile listens to a music with flat equalizer to that of the increased bass and treble music, he'd prefer the bright and fun signature of that music rather than a flat response ones. When I see such people, I really wouldn't know how to make them understand that it is not the actual music composed by the artist and what you are hearing is fake bass and treble noise and not the actual sound. But, that's just me.
Similar thing I have noted in displays, PLASMA lovers are videophiles who crave for the actual picture, that the director had in mind while shooting the movie.
I'm on the verge now, whether to be a videophile and see the intended one or to have fun and enjoy with what I like.
Hope this comment doesn't hurt any videophile's feelings
Even I like the concept of deep blacks in Plasmas. Cause I have a OLED phone and watching black as black is a great experience. First thought, the black levels of .002 cd/m2 wouldn't be noticeable in a dark room. But after watching the below pic, I was quite disappointed. Still the TV is visible in the dark room. If that's going to be the case, then I GUESS there wouldn't be any difference for me b/w light gray and very dark blackish gray.
VT50
LM7600
Please watch it in an OLED screen to see the real difference. On my monitor (TN Panel) both looked the same black. On my SGS, super amoled screen, it was a difference between day and night, with poor clouding (i guess thats the word) issues in LG's LCD screen.