I've used every major DE and WM over the last few years, but KDE has provided me the smoothest, most stress-free experience of them all, which is why I sacrificed the leanness of a WM+hacks kind of system to stick to the latest Plasma.
been using kde plasma since 5.12 on my laptop which i use for like 14 hours a day. the improvements have been phenomenal over these times. good job everyone