That's the big problem with Vizio, you get what you pay for. On Vizio low-end, they're one of the least reliable televisions out there. They have made strides on their top of the line quantum series, though.Vizios are affordable, but the problem is their panel lottery. I have a 65C7 OLED, and an 82" Samsung LED. I originally purchased the OLED for gaming with my PS4 Pro. But after watching a few 4K movies on the OLED, they looked so good that I didn't want to ruin the TV by gaming on it, so I picked up the 82" Samsung for the PS4 Pro. Currently I'm debating on whether I should get the 48CX, 55CX or 65CX next.
TCL's Vidrian is what I'm interested in the most. They're also bringing mini-LED to their 6 series.