Pego la ultima configuracion de un usuario de avforum , a mi me va de lujo, la mejor de todas las que he probado mi tv es la 55M7000.
Give my settings a try if you like. I used professional calibration files to set the brightness and contrast and the rest was personal preference. I have the 65M7000.

Picture mode standard
Brightness 52
Contrast 51
Color saturation 43
Backlight 37
Tint 0
Sharpness 5
Adaptive contrast middle
Color temp standard
Ultra smooth motion off
Local dimming on
Noise reduction off or low