Plasma 5 looks good and feels polished by default. I do most of my work on my desktop, and wouldn't give up my highly configured xmonad+emacs setup for anythin

Plasma 5 looks good and feels polished by default. I do most of my work on my desktop, and wouldn't give up my highly configured xmonad+emacs setup for anything. But I recently got a new laptop and decided to go with KDE and was blown away by the polish. The style of all the GUI apps I use is consistent and I can press a button to switch to a nice, consistent dark mode. I have encountered absolutely no issues with screen tearing or performance, with were common when I used linux on previous laptops. I've faced no issues with fonts after installing Google's noto font package. KWin's external monitor support is also satisfactory. I haven't used recent versions of GNOME/Cinnamon/Unity, so can't comment on them, but KDE Connect is the killer KDE feature for me. I love the integration between all the apps on the KDE ecosystem. The calendar syncs to my Google calendar, and my contacts and mail are handled by KDE too. I didn't need to install a thing apart from the KDE workspace and apps for any of this. I've even switched to using the Breeze theme on my xmonad desktop.