I am fairly certain that LG is the only game in town when it comes to large OLED panels, so even the Vizio will use the LG panels.
I'm going to tell you to go LG, but for a completely different reason! I absolutely love the LG Magic Remote! It works similar to the Nintendo Wii motion controllers (Wiimotes). This is a feature that they better get right, and they did.
I have almost all of my sources going to the LG TV and using eARC back to my Denon. I did this simply for the ease of use with the magic remote as my universal remote and the HDMI-CEC features. It all works pretty well for me, just a couple minor quirks.
But, with that being said, the warning is, don't put all of your eggs in the eARC/HDMI-CEC basket. Not all makes/models will play nice together, and can be a huge hassle. I feel like I got lucky with how well mine works, and there is no going back at this point.
EDIT-- I have never once been concerned with OLED burn-in, and have not seen any as of yet either. I also don't understand any of the complaints about OLED black levels or absolute brightness levels (even in my bright ambient light room).