Over the years, I enjoyed Solaris a lot. The recommended patch clusters made it easy to track current fixes. All in all, it was a really nice Unix system, stable and very easy to use.
Too bad Solaris x86 didn't make it, but at the small amount of supported hardware, nobody is surprised. Solaris 10 for Opteron may had become serious competition for Linux, because the source is open, there are free distributions and ZFS looked most promising.
After Oracle took over Sun, things changed a lot. The times of free patches are over and OpenSolaris appears to be mostly left, not supporting everything Solaris did. The message is clear, hobbyists should change to something different. No problem. Something the idea avoiding it professionally sounds just as good.