I bought this tv. I am returning it.
I tried every combination of picture settings, but always the picture (while seriously hi-def) looked plastic/digital, with a weird depth of field that was headache inducing.
I was very disappointed.... and asked for advice. The tech guys at John Lewis said that they had similar complaints about this model, and believe it is something to do with the way this generation of Samsungs TVs are processing their picture.
I will buy a new tv.