Well the 2017 Samsungs are edge lit and not as good as the 2016 9800
which is Full Array.
Only LED sets that hold a candle to OLED's are the Full Array sets with the 930e from Sony being the exception as they have neat little tricks they do with the edge lit lighting.
Crazy that Sammy has nothing full array for 2017? Looks like I have a collectors item with my 2016 9800, lol. I love this set btw still. Get a boner everytime I play a game or watch a movie that utilizes its circuitry. Gotta get that X1X for sure...my TV demands it.