I am a Linux user, I mainly use RedHatArc and ubuntu/debian. I want to start using Unix's for servers instead of Fed/Cent. I have tried but never successfully installed FreeBSD. I haven't tried NetBSD yet (DLing the ISO now), and have not gotten a copy of OpenBSD in my hands yet.
I was hoping to get some input from various Unix users here on the applicable differences with the free Unix's. Not so much the differences in the actually implementations, but more the best end uses for each one.