I have two other 4K sets; a 55JS700D and a 65JS850D (Costco version of yours). The MU seems to have a bit better contrast than either of the JSs. All 3 tvs have the picture mode set to "movie" and backlight set at 10 or 11. The gamma on the JSs is set to 0; I didn't get that choice on my MU, nor did I feel the need to adjust it, as the dark grays/blacks all looked balanced with no crushing. I have found myself actually preferring the MU over the JSs by a hair.