I was telling my wife about the big 3 BSDs yesterday. I said the NetBSD guys come off like the ones who are having the most fun, since it mostly seems to I, an outsider, like they just want to port NetBSD to as many platforms as possible.

OpenBSD is what I have landed on ultimately to start learning, but man, I can't even get it running in Virtualbox correctly. Gonna try QEMU today.

EDIT: I got it working in VB after all! For anyone who stumbles across this and is on a Dell XPS, try switching the chipset in Settings > System to ICH9. Now time to write up a little checklist of little projects to try on it.