If you want a TV with the best visual fidelity that money can buy, the LG G4 OLED is it. The G4 offers the best color and contrast I've seen over the past year.
Some fine-tuning and adjustments turned the TCL S55 TV into a monster home entertainment set - and it's on a massive discount through 2025.
The Sony Bravia 8 OLED TV stacks up well against the LG C4. It all comes down to what features, OS (Google TV vs webOS), and remote you prefer.