I just picked up my 55HX800 from Best Buy today.
I've only tested it a little bit but I think it's an AWESOME set.
No flashlighting or clouding that I can see.
I tested a few things with it, such as the Avatar Bluray, which looked AWESOME. I'm glad I took the week off, now I can play all week.
To me, the blacks look great. I came from 3 problem riddled Samsung 58PNC7000's and I feel the picture so far is better. I never thought I would say that as I have been a plasma-only person before this. To me, the blacks are inky in comparison to the Samsung plasma.. which was a much lighter shade.
I tested the demo's of stardust and Motorstorm in 3d and they look really really nice. I did register just now and am downloading the 4 full games.
One question - I did the www.sony.com/3dregistration
to register for the 2 3d Blu-rays.. There was no indication after I registered that they are sending this to me. Am I supposed to get some notification?