Going the other direction, the Acer Predator XB321HK is a 32" 16:9 (I'm not a fan of the ultra-wide stuff) 4K screen with great picture and GSync if you play games with Green Team's GPUs. It's over a grand and only does 60hz, but it's a big nice 4K panel and it's not a TV.
Lastly, you have things like the Dell P4317Q, which is targeted at stock traders. It's a 43" 4K screen for a relatively-affordable $1350 with a proper DisplayPort input. I nearly got this instead of my Vizio P55-C1 (which is the only IPS screen of all the 2016 Vizio P series), but I liked that the Vizio did 120hz, but I'm disappointed about the lack of real 4:4:4 chroma and the resultant blurry text. Still, if you want a huge desktop monitor, the Dell might be the way to go. The Philips BDM4350UC is about the same as the Dell, and has a lot of discussion here: https://hardforum.com/threads/philips-bdm4350uc-43-inch-4k-i...
Factor in weight (that big old workstation monitor weighed something like 75 pounds, and I hurt my back bringing it down the stairs when I finally got rid of it) and LCD is a no-brainer improvement over CRT. I have no desire to go back to CRTs.