I'll probably get hate for it but I'm not even sure 4K is worth it. I bought a 4K TV a few years ago and while I can pull up specific 4K content or find specific shows from time to time, I'm only getting 1080p a majority of the time, but unless I really stare at it, I can't tell the difference.
Sure, find me a 1080p vs 4K content clip and ask me to watch them side by side, and I can see the difference. But ask me to watch them back to back with a quick break between... And it's the same show.
I'll pick the highest quality when it's available... But I'm happy with whatever I've got.