Fedora 19 + KDE = My favorite Linux setup.
I'm using it at work on my primary workstation as the primary OS.
I've got my co-programmer using it too as his primary OS on his workstation.
I've got my awesome Laptop running it (along with Steam and games).
And if I'd known more about it when I first set up my Grandmother's laptop I would have installed that instead of the Gnome version of Fedora.
It's not perfect but it's good.