I have a 65" LG OLED and my partner has a Sony Bravia 65" OLED. We mainly watch over-the-air TV in Australia plus silver disks up to 4K. We don't use the internal speakers, but if we did Sony would win hands down.
I slightly prefer the picture quality of the Sony, but the biggest difference is the operating systems and remote controllers. Here I again prefer the Sony, When I switch the LG on, I have to point and search to find free-to-air in a very confusing screen mélange, which changes quite frequently with software updates.
We both use WiFi rather than hardwired Ethernet. By the way, there is no comparison between the quality of streamed 4K and disk-based 4K. Get the disks every time!
This is my second LG 65" OLED. The first developed a vertical line after about 5 years. After a bit of a hassle, LG offered a complete refund and I bought its replacement model for about half what the original cost me. I later found out that LG had been through the mill with our Australian Consumer Law and just mentioning it worked wonders!
South Korean conglomerate LG has been the only manufacturer of OLED TV screens for around a decade. Sony has ceded control of its home entertainment to Chinese TCL, which worries me more than somewhat. How the mighty has fallen