I have used one of the original 4k TVs-as-a-monitor ( https://www.avsforum.com/threads/review-of-the-seiki-39-4k-display-se39uy04.1482611/ https://www.avsforum.

I have used one of the original 4k TVs-as-a-monitor ( https://www.avsforum.com/threads/review-of-the-seiki-39-4k-display-se39uy04.1482611/ https://www.avsforum.com/threads/review-of-the-seiki-39-4k-d... ) as my central monitor (plus one on each side) for 10+ years now. Not feeling any need to upgrade (don't do graphics/games, just lots and lots of text terminals and browser windows)