A podcast I recently heard - hosted by long-experienced Linux hands - reported that installing BSD was a nightmare. Some discussion of which distros avoid that nightmare might be helpful.
Here's a tribute/introduction written by Derek Sivers:
As for my own experience, I don't know if I'm ready to give up Debian as my primary desktop OS, but I really like OpenBSD on my coding-or-surfing-on-the-couch laptop.
On the server side, I also use both (as VPS) for personal projects.