GNOME

It looses with KDE badly. It doesn't even offer ability to change simple things like fonts (unless you install a third party tool). Gnome shell has serious usability flaws.

I used a lot of different operating systems and Desktops so far. Starting with Windows XP to 8. And on Linux Gnome, KDE, Xmonad(Tilling WM), XFCE and others. I'm Using Gnome 3 for a solid 3 Years now and I'm most convinced that it is the most efficient and absolutely best desktop UI so far! there are still places that could be improved but so many things are just way easier in the gnome-shell than in any other UI. so thank you a lot for coding this awsome Software.

GNOME is a solid desktop for various Unix-like operating systems. It offers a traditional desktop experience and follows a conservative release cycle. This doesn't sound that fancy, but that's OK.