Ehh, screen zoom could be better on 4k monitors. I always find the display scaling to be WAY off by default and have to mess around with xrandr settings in the terminal to change fractional scaling. This (and many other basic setup issues) doesn't make for a great first-hand experience when first starting out with Linux.
https://wiki.archlinux.org/index.php/HiDPI#Fractional_Scalin...