SPLAT said:
I'd get something really cheap for now and wait for 4k/OLED TVs to hit the market.
That could be quite a long wait, years for the prices to be anywhere near sensible, even if the picture quality, when you do get one of the things, gives you the mother of all orgasms.
Of the two TVs that the OP lists, I've seen the immediate predecessor to the Samsung, (the UE55D8000 I think) recently, and I was mightily impressed, and this year's model is even better. Yet, I know that the Sony is very special too, and is about £600 cheaper. The Sony apparently has the best black levels of any LED television.