Bought my son a Hisense one for his bedroom. Uses it for gaming mainly, but excellent value for money as previously mentioned.
Last time I bought a telly from them they tried to upsell me some gold plated hdmi cables over cheap ones. They'll not get another quid of my money.
https://www.rtings.com/tv/learn/how-to-calibrate-your-tv You used to be able to put your model in and it gave you the professional calibration settings, you normally pay around £200 for a professional to come out with all the gear to do it, so take a look around the site. No point watching all these expensive TVs with out of the box settings.
I must have been unlucky in the past,I had two Samsung and both developed dead pixels.Drove me mad,wouldn't buy Samsung again!