I currently have a 55 samsung d 8000 which I am not really happy with, I have had it for two years. I was looking at getting either teh 4k sony x850 55 inch or the samsung plasma 8500 51 inch. The only problem with the plasma is I am not sure I feel **** going from a 55 to a 51 inch and the 60 inch is two big for my space. Is the samsung 8500 plasma that good or should I go to a sony 4k tv x850?