The best advice I can give you is
not to treat (Free)BSD as if it were Linux. There are no "distros". Sure, there are variants but ... it's still very different.
At the risk of being somewhat of a puritan right now my take on this is that there are basically only 3 "main" BSD editions:
- FreeBSD (this is where we're at right now).
- OpenBSD => a BSD "variant" if you will which is fully geared towards high-end security. I quote: "Only two remote holes in the default install, in a heck of a long time!". Here's the thing... OpenBSD doesn't necessarily rely on FreeBSD, there's even an OpenBSD foundation.
- NetBSD => Another BSD "variant", but this time I can't really comment on it because my experience with NetBSD is very limited. My take is that it thrives to provide a lot more and wider spread hardware support ("Of course it runs NetBSD!"). Nevertheless this is yet another BSD 'variant' which doesn't necessarily rely on others, and once again there's also a backing NetBSD foundation.
But anything beyond this... isn't necessarily a BSD 'variant' but rather a spin-off project that utilizes an existing one to build upon. They don't provide a whole new OS but an existing one with their own customizatons applied to it.
Each to their own (and I'm
not necessarily criticizing!) but that doesn't even come close to the idea of Linux distro's.
Keep in mind: Linux is essentially a kernel where the userland had to be build around it. BSD is and has always been a full blown operating system right from the getgo.
As for being best... your mileage may vary. If you want security then ... OpenBSD might be a good choice, but so will FreeBSD. OpenBSD will gladly sacrifice user friendlyness ("usability"?) in favor of hardening. Obviously there can be situations where this simply won't do.
Just my 2 cents on this of course.