[johnny22]

i use Fedora 20. The advantage is that the knowledge i get from using it daily is also quite helpful when dealing with Linux based infrastructure generally.

It doesn't matter whether it's for digital signage, phones, servers, desktops, or neat projects with the raspberry pi.

They don't all use the same software, same package manager, or same init system, but i can still jump in and play around pretty quickly.

I don't really think there is much that Windows or Mac OS X could do to make me change to something else.