Its always hard to tell with pictures. Does not look too bad. The real test is watch a few movies and try (really try) not to look for it. I have found that if you just relax and stop trying to look for imprefections/banding/etc. you may stop seeing them. I had/have some banding/DSE on my TV (you can search for my pics) and I ended up keeping the set. Why? I found no dead/stuck pixels and aftet a while, I stopped noticing the banding. Looking at those pics, I think it looks pretty good (i.e. better than mine )
But, I will say, its always a huge disappointment to see these issues on such an expensive TV. I can't say I am 100% happy with the TV but, overall, it still provides a great picture nearly all the time. I wish Sony (and other mfgs) could be more uniform and consistent with the uniformity of LCDs at this high price level. But, sadly, that is just no the case. Seems like this model is simply not the pinnacle of TV design and many/most have some level of non-uniformity/banding or DSE.
1. Stop looking at grey fields/patterns.
2. Watch some movies and play games on the TV and relax.
If, after 2 weeks, you still notice and the imperfections while watching cotent, you may decide to return or replace. But keep in mind, Sony LCDs even at this price level are not as consistently uniform as we would all like. Do a search here and you will find other with similar imperfections etc. its all about your perception of the issue when viewing normal content and NOT test patterns.
Edited by Padrino - 5/21/13 at 7:46pm