Yeah I had FreeBSD on the route before OpenBSD. FreeBSD was a very disappointing experience for me. This is some years back so the situation may be better. Back then, a lot of ports were broken. It felt that every second port did not compile. The second thing was that FreeBSD is like most Linux distributions: It tries to support everything and that is bad. If you have a problem and ask how you solve that with FreeBSD you mostly get the answer: you can use X or Y or Z. X has this disadvantages, Y was not updated for years and Z has no documentation. I also tried to try NetBSD but it panic'ed on all my machines during boot.

Disclaimer: I am an OpenBSD fanboy because it opened my eyes. OpenBSD's base system already solves 90% of my problems with exactly one, perfectly maintained and documented solution. You want a firewall? Choose between pf, netfilter or something else on FreeBSD. On OpenBSD the answer is "use pf" (which is btw by far the best paket filter I every experienced). The port system just works, is up-to-date and has good default configurations (and I never missed a package). Maintenance is very easy. It is not as easy as apt-get update && upgrade but the release upgrade (every 6 months) never broke anything on my systems (and takes just 10 minutes). Besides that, there is nearly nothing to do. Here is the bug/update list of the current release (5 months old): http://openbsd.org/errata51.html The last thing I want to mention now is the consistency in all tools. For network configuration there is ifconfig which can just handle everything (e.g. on linux you have to use special tools for wlan). You have great manual pages. The manual pages are real manual pages with introductions to the systems, various high level topics down to device nodes etc. They are completely up-to-date and the best source for all informations.