I am unaware of there being any doubt as to OLED surviving. Whereof do you speak?
I may have overstated, but it isn't as clear now as once that OLED will stay around;
http://www.hometheatershack.com/for...amsung-no-oled-display-production-2015-a.html
http://www.techradar.com/us/news/television/tv/is-sony-shelving-oled-tvs-in-favor-of-4k--1248265
In stores I only see LG OLED. Digging a little at reviews, OLED makes a stunning display, but actually the overall specs of the LG's are below in some areas of other TV's. One example "As with all OLED TVs, it has a couple of issues you won’t find with LED models. Temporary image retention of static images is to be expected (though this should disappear within a few minutes of using the TV), mostly-bright images will make the luminosity of the screen dim, and the uniformity of dark colors isn’t great." I could see this in the store, the TV had obviously been on but a trace of image retention could be seen but you had to look hard, slight but the screen dims some on bright sky images, and I found background images sometimes "moved" just a smidgen when a person moved. No question I would expect these type of things can be improved, but it did make me a little more happy I can't afford those sets.