From Fedora Project Wiki
Fedora user
I love the Fedora project
GNU/Linux and BSD
I love BSD and GNU/Linux
Currently i work everyday:
BSD:
FreeBSD, NetBSD and OpenBSD
GNU/Linux:
All distribution, e.g. Debian, RedHat and Suse interprise linux
Are you working on the network? then you should use BSD (unix-like) and GNU/Linux :)