TBH i haven't used KDE Plasma much. I used to like KDE 3.5, then KDE 4 was a disaster that it took several releases after KDE 5 to stabilize (i remember trying

TBH i haven't used KDE Plasma much. I used to like KDE 3.5, then KDE 4 was a disaster that it took several releases after KDE 5 to stabilize (i remember trying KDE Neon, supposedly KDE's very own distro that should be rock solid for KDE - and i had severe visual glitches). But the last versions of KDE 5 and KDE 6 nowadays seems fine. Again, i'm not using it much, i mainly use Window Maker (X11) and use KDE Plasma only on my laptop as well as on my desktop when i want to try something in a more "windows-like" environment or as a different user (for default configurations, etc). I can believe that KDE Plasma still has issues though, it seems some sort of bomb was thrown during KDE 4 times in the codebase and it still has to recover. Though if nothing else, i do use KDE apps outside of Plasma (Kate, Krita, Dolphin, Okular, Spectacle) and they all seem very solid.