I started my unix-life about 13 years ago with FreeBSD. It was the 2.x.x era. It was young but super stable and used by many Internet power houses like Yahoo. Long story short, I eventually migrated mainly to Linux on my personal servers. I've been using Gentoo for about 5 years now. Now, I want a file-system to store all my stuff on my home server that is superior to ext3.
This quest has brought me back full circle to FreeBSD 8. I've used ZFS professionally for many years now and is my preference. So my first thought was to use OpenSolaris. Unfortunately, I was saddened to see that my old but still perfectly working 3ware 8xxx SATA cards are unsupported in Solaris. That left me with FreeBSD which had 3ware support and happily stable ZFS support.
Moral of the story is that while OpenSolaris has expanded hardware support here and there, it's still woefully short of "anything you might have laying around" type of support which is essential for the home hobbyist. Interestingly, while I'm sure there have been many under-the-hood changes over the years, FreeBSD from a user's perspective is still near identical to how it was all those years ago. That is somewhat disappointing because the menu-interface should've been drastically improved years ago. Seriously, why would I want to hit "Cancel" to move to the next menu?
But it gets the job done.