I had to go through a similar exercise recently. The DisplayPort / USB-C / Thunderbolt story is just insane. I was looking for a monitor to use with both MacOS and Windows. HDMI can't do 4k @ 60Hz, DisplayPort cables never tell you which version they support.
I ended up with LG UHD 4K 27UL650, which I'm very happy with, but switching between Mac and Windows is still difficult, because this monitor only has 1 DisplayPort input. I've settled to using HDMI for Mac and 30Hz instead of switching cables all the time.
Improvement in experience is very subjective but I agree with the author on everything except maybe the 120Hz.