There is simply no display technology on the market which bests OLED and anyone who has a OLED display out is using LG glass. I would stick with LG if that was the direction I was going. I'm not sure that any manufacturer really has a monopoly on quality vs. issues these days. Some products from any brand can be lemons, while others are great. There are also always some units which just fail.
All that said, I still lean towards Sony for reliability in a product. This is based on nothing more than my own experiences over the years. I think they have continually delivered product which is just a bit better than most everyone else, except, maybe, Panasonic. Since Panasonic is (mostly) out of the TV game, that leaves Sony as a solid consumer product.
Then I turn towards Samsung, Vizio, and LG. I think LG had a few really lousy years that they have come back from and that we similar reliability from all three brands. In terms of quality, OLED rules the roost, and then the LCD products from Samsung and Vizio must be evaluated and reviewed individually for image quality (just as Sony displays need to be).
Give me a 90" OLED and call me very happy for at least 2 or 3 years.