You have gotta love KDE Plasma 5 Desktop with the stability and software of Ubuntu. It's called Kubuntu.
I had been against KDE for long long timeand always stuck to alternatives like GNOME, MATE, XFCE, LXDE, OpenBox, but after suddenly deciding to try the new KDE interface called Plasma, I just fell in love...
Also, being a long time Linux user with a bit of OCD about settings and computers in general, the amount of settings for literally everything is just amazing. You can make Plasma what you want it to be, as you can see when comparing my screenshot to the default Plasma look. Also very stable, i run it on all my machines in signature, with very different graphical settings of course, but it works wonderful on all of them.
IMHO, the KDE team worked harder than all of the other Desktop Environment teams together , and did a complete great frickin' job