Some recent discussions on HN have good comments about why you might give FreeBSD a try:
https://news.ycombinator.com/item?id=6966330
https://news.ycombinator.com/item?id=6949095
FreeBSD 10's New Technologies:
http://www.freebsdnews.net/2013/09/20/freebsd-10s-new-techno...
There was an HN discussion of the article as well:
https://news.ycombinator.com/item?id=6417168
FreeBSD 10's New Technologies:
http://www.freebsdnews.net/2013/09/20/freebsd-10s-new-techno...
There was an HN discussion of the article as well:
https://news.ycombinator.com/item?id=6417168