After several months of using this TV, here are my impressions. Note that I'm using Antenna HD, PS3 Bluray, and DVD.

Design:

The thin bezel design and glass(stem) stand is gorgeous, it feels like the picture is floating on the stand. The thin bezel really enhances the picture by minimizing reflections. It's really refreshing to not have a thick glossy bezel shining at you when watching TV; although the bezel itself seems to get mighty hot after several hours of use. The screen is glass and it does have reflections in daylight. It will probably annoy those of you that have a lot of glare coming from windows.

Picture Quality:

HD picture quality is outstanding while SD ranges from good to OK. The SD quality really depends on your broadcasting source; higher quality SD means good SD picture. Blacks are good, but I believe the processing engine goes a bit overboard and saturates the blacks to a point where details are lost. I haven't found out... Read more

I have only had the television for 3 days now, but here are my initial impressions:

The picture is absolutely stunning. I upgraded from a 50' Samsung DLP that I'd had for about 7 years. I truly didn't realize what I was missing with the technology advancements of 1080P LCDs and LEDs over the last few years. My wife and I will be watching HDTV in either 1080i or 720p and look at each other and say this doesn't look like "normal" TV. We finally figured it out last night. The picture is so clear that television shows truly appear to us as if we're looking through a window into somebody's home or perhaps watching a live performance/sporting event. We can even start to decipher how "fake" some of the sets are that the producers are using on many of the sitcoms.

Watching a Blu-ray is almost like watching a video game. The frame rate and clarity are so much improved over previous generation sets that it really gives you a whole new movie-watching experience... Read more

The good:
Gorgeous appearance. Unusually slim bezel. Very thin. Barely warm when used (very low power consumption). Lots of apps including Vimeo streaming.
Glossy screen to my surprise appeared reasonably dark and without interfering glare even in bright sun lit room.
The bad:
First and major one - absolutely unusable for 3D viewing. Crosstalk is unbearable, totally spoiling 3d immersion. Originally got 3100 glasses. Samsung support told me to get newer, 3300 glasses for this TV. Over hundred bucks later - exactly same issue. I'm convinced that there is no difference, at least for this TV, if 3100 or 3300 glasses are used. For this thing alone this TV does not worth it's price.
Second - uniformity. Very bad on black (light spots), and even mid gray has some problems - one dark blob. (I did not notice any problem on bright white). On black both lower corners are bright to almost unbearable interference with picture. Samsung support told me to hold my conclusion... Read more