I bought a 2018 LG OLED from Costco two years ago. Got it for £900 at the time and its a great TV.
As already mentioned Richer Sounds do 6 year warranties if you can find what you want at a decent price there.
A mate of mine was in this very position a few weeks ago. Stuck in an endless loop of reviews and jargon for ages. He ended up going for a Samsung QLED. They're a very good option if you can't quite afford an OLED as they still have much improved black levels. Also, Samsung soundbars can connect to the Samsung TV wirelessly via Bluetooth which is handy. I know b