Leo bought Lisa a 55" Vizio M series for her office and he says he got a great deal on it. Scott says that Vizio gives you a lot of bang for the buck, and the M Series is just a step down from the flagship P series, with 4K UHD, HDR, and full array local dimming. It's a nice TV.
Meanwhile, Vizio is not being bought by LeEco, as Leo worried about. By comparison, the Sony OLED 55" is wonderful, but it's over $4 thousand. And it's still not even brighter than an LCD. If you have a room with bright light, then LED is a better choice. If you can control your light, then OLED is a better choice.