I just got to see this tv in action today. Both in complete darkness and with lights on and even dim. It was fantastic And has to be the best tv currently available right now. It does still have some of the same issues all backlit led tvs have but it does try to hide them as best it can.
We watched a lot of the Dark Knight stoping on some scenes that are very difficult for any LCD to pull off. It was able to really pull these scenes off really well. We learned that although there can be some blooming or flash lighting or whatever the cool kids are calling it these days. It tries to focus its lights away from the image. We saw samples of this with both movies and more to the point text. There is a setting that you can turn this feature off. Once off it looks more like all the other locally dimming tvs. This really sells this feature as it really does enhance the image. Also they have a lot of other settings to enhance or strip down the features of this TV.
It is THX certified. I believe this is the only backlit LED tv to have this. It allows for ISF calibration.
3D on it is great for LCD and has to be the best LCD I have seen in 3D thus far. It does a great job of taking 2D movies and upping them to 3D. It also had settings to up the brightness as needed for 3D. Because they used the the extra yellow pixel it can (and does) get very VERY bright if needed. Easily the brightest tv I have ever seen.
With brightness come darkness and this set gets dark... Really dark, inky dark. This tv will hold its own very well and I am excited to see what the calibrators numbers will end up on this set as it looked pretty dang good to me. Say you have a fully black image on the screen with say a pause icon in the corner. You might see the slitest hint of blooming around that image but the rest of the set is black.
One thing I found really interesting was how they add the yellow pixel. If you look at the pixel structure you'll see that the red and blue are normal sized but the green and yellow are half sized. In theory they could do this again with cyan and magenta by doing the same with them and the red and blue. That would be pretty cool if they do add this to their future sets.
Ok now on to what everyone seems to have an onion about. The engineers involved. Everyone keeps talking about how the Kuro engineers have left or know nothing about LEDLCDs but I think people are thinking about this all wrong. Now I can't say who worked on what but there were some dots that were pretty easy to connect. Sharp has been a leader in LCDs and know what they are doing in the 60+ sizes. They for sure were the ones working on the hardware. This is new tech from them and they are only going to get better over time. But one of the things the Kuros had in spades was the software running the tvs. Fantastic presets like Pure, all the menus, all the backend that runs a tv that most of us take for granted. This is where I believe Pioneer helped out. They didn't say who did what but they did say this was very much a joint venture. Also if you look at the new software Pioneer is using on their new Elite receivers its pretty clear they were created by the same team.
To sum this experience up and get this overly long post done. I will say this is one of if not the best tvs I have ever seen. It does suffer from a bit of blooming and off angle performance will never be as good as plasma. But for image quality I do believe it will hold its own quite nicely. I have to say the pros defiantly out weigh its cons. Its bright, its inky dark, its slim, it doesn't get hot, and uses way less energy. Cons to me are the hint of blooming, off angle performance, and price. It's not cheap by any means but if you compare it's price to what a 50" Kuro started at onc could call it a budget set.