I currently run an Acer X34P centrally on the desk, with a Dell U2412 alongside in portrait mode. I would like to replace the Dell with something higher Res, either 1440p or maybe even 4k? It is used to display things like Slack, Spotify, terminals etc while the main screen is the X34. What kind of relatively budget models will work in this mode. I'm guessing anything TN will look a bit rubbish in portrait.