Came from a LED 55 Samsung NU8000, which is very decent 2018 TV despite not even having Quantum Dot (it even has 120Hz panel) and now i recently got a 55 OLED LG B4...and im very happy with the upgrade. The most noticeable bump in image quality is with Dolby Vision content and gaming related, with my PS5 even from the home menu you can tell the difference...But the games in which ive seen the bigger upgrade are Gran Turismo 7, RE 4 remake and, believe or not, the PS4 remaster of Doom 3 (becuse its a darker game, so those infinite blacks pretty much sums up to the atmosphere). Also i've played Swich and PS3 on there, and i like the results, but isnt as staggering as when i play PS5 or Dolby Vision content.