Something I've really come to appreciate with OpenBSD is the stability and ease of in-place upgrades. I'm not very familiar with FreeBSD, but from what I've read it seems it too has stable, straightforward, in-place version upgrades. I'd love to hear people's experiences.<p>I've found with Linux distributions that aren't rolling releases, things tend to break in annoying and insidious ways, such that you generally need to, or at least it is strongly advisable to, fresh install each time.<p>This is probably of less importance given the demise of the monolithic server, but for my own server, I really appreciate it and the avoidance of reconfiguring everything.