OK, now i’m thoroughly confused. I was about to order a 2018 mini, but having read this and other monitor threads for 3 hours, I have no idea what monitors to buy. I currently have two low res monitors on my 2014 mini running Mojave, 27” main and 24” side. I do ordinary MS Office, email, Internet, light graphics. My plan was an i5/16 RAM, integrated graphics. To summarize, if I’ve got this right: 24” for 4K, if want larger go 5K. But then get into scaling issues. 32” sounds appealing, but scaling might limit space utility. And then there could be issues with stuttering and pink clouds. Looking forward to more posts from folks who have real world experience with specific monitors.
Displays:
U28E590:
Resolution: 3840 x 2160 (2160p 4K UHD - Ultra High Definition)
UI Looks like: 3840 x 2160 @ 60 Hz
Framebuffer Depth: 30-Bit Color (ARGB2101010)
Display Serial Number: HTPJC00498
Main Display: Yes
Mirror: Off
Online: Yes
Rotation: Supported
Automatically Adjust Brightness: No
Connection Type: DisplayPort
U28E590:
Resolution: 3840 x 2160 (2160p 4K UHD - Ultra High Definition)
UI Looks like: 3840 x 2160 @ 60 Hz
Framebuffer Depth: 30-Bit Color (ARGB2101010)
Display Serial Number: HTPJ503320
Mirror: Off
Online: Yes
Rotation: Supported
Automatically Adjust Brightness: No
Connection Type: DisplayPort
Works like a charm. Don't make it more difficult than it is. You can just go with a cheap Samsung 4K for $300. You will not notice any real difference from other monitors, unless you have really specific professional needs (like Prophoto/Adobe RGB color space).
Of course you don't scale. There is absolutely no point in scaling a 4K 28" screen, as it already is ”retina” (i.e., you can't distinguish pixels). Still, people do scale to reduce 4K to 2K, for whatever reason. I guess they like to scroll and zoom, and are comfortable with that tiny screen estate. I am not.
Yeah, UI elements become smaller. But the way Apple goes about this is plain wrong. They need to implement custom sizes for UI elements (menus, default text etc.) in preferences, and make these settings global through relevant APIs. What they are saying is in essence that you should stick with your phone size screen no matter what. As expected from a phone company.