From Apple land
After years of using a Mac I decided I was fed up with it. Keyboards being the main complaint, but that's another story. I got a nice dell, used Windows 10 for a few minutes, and then installed Manjaro.
I've tried the different desktops available. Gnome feels super slick when it first gets going, but quickly becomes annoying. I didn't find it intuitive at all, I kept opening a screen of icons, stuff was hidden, and I later found out I really needed an extra tweaks program to access settings that were not available in the usual settings menu. I tried a couple of extensions that changed things up a bit, but they're quite slow, I found any extension that messed with the layout or windowing was jittery.
I tried other desktops, and I don't have much to say about them, they were fine and were as they were, but weren't for me, and came across as restricted in one way or another. Before using macs I was running XFCE on debian. It didn't appeal this time around, perhaps I've changed and it has not?
KDE has been great. All the settings are available in one place. The default layout is intuitive, and then you can customise the hell out of it. Activities is interesting, it's another layer above virtual desktops, and I'm using it to keep 2 types of work and my personal stuff separate. It looks nice and minimal. I've even written a plasma widget using QML, and that was fairly easy; QT docs: very good. Plasma docs: pretty shit.
The most surprising thing about KDE5 has been how snappy and lightweight it feels. Back in the day KDE3 seemed heavier than Gnome, and KDE4 was just awful and sluggish. They really have turned it around.