baka-dubbs

OLED is by far and away the best TV quality you can get, especially in a darker room(they generally aren't as bright as the higher end LCD-LEDs).  Sony has some fantastic LCD-LED TV's if your needing a brighter set, and their OLED Bravia is fantastic, but uses the same OLED panels as the LG OLED's.  Samsung TV's are overpriced for what your getting, as I would take the Sony tv at comparable prices every time.  The one manufacturer left off the list is Vizio.  The Vizio P series 65 inch is a much better display than the UN65MU8000.  They have 128 zone local dimming zones(vs edge lit dimming in the Samsung).   It supports the major HDR standards(not sure which if any of the displays support Hybrid-gamma log), and is at a better price point.  Even cheaper is the M series, which cuts the local dimming down to 32 zones and runs at 60hz, but is hard to beat at its price.  The 65 inch m series is typically priced at $1100, and has dropped to under $1000.

Really, any of the major brands are producing good displays(avoid non-OLED LG's though), so if you find a good price around black Friday you can't really go wrong.  The Apple tv with the Vizio negates its lackluster Smart features(its still pretty much just a chromecast enabled display).  Sony's android tv, so you can have more native apps if that's your thing.  LG's WebOS is pretty slick, but lacking in the app department.  Likewise, Samsung's interface is pretty good(based off of Tizen), but lacks some apps.  If your using your display for Cablebox and Apple tv(or just Apple tv), you can pretty much ignore the interfaces if you want to. 

EDIT:  If you find a TV your interested in, rtings.com gives fantastic write ups on most displays, and tells you comparable(and recommended) items at the same size/pricepoint/quality.  Definitely a good site to check out if your about to drop some cash on a display.