Me too. This is my first foray away from XFCE in about 10 years and I'm not sure I like anything about these other things yet.
Discussion
FYI KDE uses less resources than XFCE, believe it or not.
KDE sucked around the time they went to 4.0 and plasma. They lost half their features and added tons of bugs. Maybe it's time I give it another look. I used to love KDE (except for all the KDE-specific apps which was silly and unnessary for a window manager, and the supporting KDE-specific development tools and libs WTF? Why not just be a window manager?).