I purchased the 900C after speaking to the Sony Rep, Ken, in my local store, late November, 2015. He and the salesman promised me the light bleed issue had been fixed. Based upon that, I bought it. The 900C was brilliant when I first set it up. Best I had ever seen. However, tonight, three weeks after it's debut in my living room, I was hugely disappointed to see the light bleed all around the edges - extending out 5 or more inches. Heartbreaking after the promises and the work it took to install the TV. I called Best Buy and they said to choose another TV. They are taking it back.
So, that's my story. If it helps, the serial number begins with 5021.