Originally Posted by Masterbrew2
If you are constrained to only using words, maybe instead of listing technical improvements - that may not be understood - it's better to dvelve into the background story, like:
"You know how for many years we had the bulgy CRT TVs? And then one day, plasma and LCD technology came along, which gave us the flatscreens we use today? ... Well, now the next step is here. This is an OLED."
Sorry - I'll give you an 'A' for effort, but that's pretty weak.
If you are coming from plasma, the key selling features need to be bright-room viewing, 4K resolution, a much lighter, thinner TV that consumes less power, and a larger screen size (you can try richer colors and deeper blacks but in my experience that's rarely a winning argument).
If you are coming from LED/LCD, the key selling features need to be much better viewing angles (everyone in the room gets to enjoy the same fantastic image quality), and a more 'movie-theater-like' cinema experience (no jumping around of the image brightness, no distracting grey-black letterbox bars), as well as the larger screen and 4K image resolution assuming you are moving up from a smaller 1080p screen. (and same comment as far as colors and blacks).
In addition, if your household is a fan of 3D, there is always the 'full' 3D experience of LG 4K WOLED passive 3D...