[GTALUG] 4k monitors

Greetings A number of you have indicated that you're now using 4k monitors. I've got a 24" monitor that is showing signs of dying and am considering what to do. I have an LG 43" 4k monitor, I like it, but its no longer available. It seems that I would need to spend in the $1250 can or more range to get a monitor that has decent reviews. (The LG cost me barely over $700 can (!!).) For those that are running 4k monitors - - -what are you running and are you happy with it? TIA