I vastly prefer KDE to everything else, however don't go wiping your PCs and installing KDE/Plasma 5 because of the eye-candy. A bunch of stuff is still not ready, relative to KDE 4. Example, few workspace widgets, for example, no Quick Launch, only 1 weather widget. Widgets not resizeable. The wi-fi/network connection app something thinks it is connecting, when is already is connected. Sign-in screen doesn't know to use your pic/avatar. No way to use Emerald themes (Smaragd was usable in KDE 4). And so on.
Very usable, but a big drop in functionality as things are worked on. Yeah, I know it is a more elegant framework, etc. etc.