Here is a video review of the Samsung UN65KS8500 Curved 65-Inch 4K Ultra HD Smart LED TV. The Samsung UN65KS8500 is certainly one of the better 4K TVs around.
Here is a video review of the Seiki SE42UMS 42-Inch 4K Ultra HD LED TV. The Seiki SE42UMS is a quality 4K TV which would benefit you in many ways. It is definitely a TV that you should think about buying.
Here is a video review of the Samsung UN60JU6400 60-Inch 4K Ultra HD Smart LED TV. The Samsung UN60JU6400 is a nice 4K TV with numerous features which will provide entertainment for you for a long time.