I will counter with the Iiyama prolite x4071uhsu-b1, the highest-contrast (5000:1 typ) LCD I have ever seen with such a competitive sticker price. 500~600$ 4k 40". Up to 75Hz @24bit color or 60Hz @40bit color.

It has zero smart stuff, and comes with an RS232 input for which documentation exists to control _everything_ remotely. I think the latter is due to it's brother being a 24/7 rated digital signage device, which typically implies remote management.

I'm passively looking for a newer model for a potential secondary setup on a different desk/location, but haven't stumbled on anything I'd prefer.

But consumer TVs nowadays come with absolutely hideous defaults, with color, contrast and sharpness adjusted to first and foremost compete for attention against other manufacturers on store shelves. It's gotten bad enough that stores now offer adjustment services — for a price, obviously — just to get the picture to look the way it should in the first place!