FreeBSD is great!
I've been using FreeBSD for about 3 years now, switching from SuSE GNU/Linux.
I was using GNU/Linux since '96 and ever since I have switched to FreeBSD I have liked the way it's structured.
Their ports collection really gives one notice of how true UNIX porting is like and also gives you more power to discover truely what goes on underneath all of the gui stuff that's going around now-a-days.
I have learned tremendously over the years through using GNU/Linux and FreeBSD...just little bits at a time.
May you enjoy your journey as well.