Hisense U7QF

LG's LCDs are crap. If you're looking for a decent overall TV cheaper than the XH90, maybe look at the Hisense U7QF or U8QF, but personally I'd rather get the Sony.

It's definitely a much better TV even ignoring the HDMI 2.1 ports. If you're absolutely limited to 600 you either get something big or something half-decent like a HiSense U7QF.

I think honestly I'd rather have the hisense u7qf, I think it beats both those TV's and falls between them in price. Panasonic hx800 is also probably a better deal all around if you don't trust hisense since it supports a lot of formats and I believe has dynamic tone mapping. It isn't like the q60t is bad but it isn't nearly as exceptional as it's marketing makes it out to be.

For your budget and location there aren't a lot of great options. The HiSense U7QF might be within budget (or slightly above) and generally beats the other options you have.

If your budget is that small a 65" is definitely pushing it. You're going to end up with the cheapest crap on the market as you can see from the lineup you've provided to choose from. If you move down to a 50/55" TV then you can get something at least half-decent like the HiSense U7QF which has a better peak brightness of about 600 nits and local dimming for better contrast.

The Hisense U7QF gets my pick (700 nits), or even better in the same family the Hisense U8QF (1000 nits), there's some on Amazon.

The U7QF is okay if that's all your budget allows since it at least has local dimming and a reasonable peak brightness. In the EU you also have better purchase protection so the quality issues that HiSense can have may not be as big of a deal (at least for a couple years anyway).