I have been in the market for a new TV so I have been doing some research on this exact thing. I compared LCD, OLED, and 4K TV's (plasma is dead and most manufacturers are not even making them anymore. Which is sad because you could not get a better refresh rate than plasma). The conclusion is that it REALLY depends on viewing distance. A 55" TV at 8 - 10 feet is what I was looking at. Within 8 feet the OLED and 4K TV were close but noticeable difference edging toward 4K being better. Over 10 feet and it was no comparison that the OLED was better. 4K works, and was really developed, for very large screens from far away. Combine that with the fact that not a lot of programing being developed in 4K and OLED is probably going to be my choice unless I just find a great deal on a 4K UHD. I think 4K programming is coming considering the compression, but about 3 - 5 years from truly being adopted as a standard. Remember that you cannot scrimp on other things just for the OLED or 4K sticker. You still need consider brightness, contrast ratio, refresh rates, etc. in order to really get a great viewing experience.