I use LibertyBSD as my primary OS and it runs very well.
You should note that hardware support is worse than that of Trisquel-- a very
noticable bit that's missing is support for athn (ThinkPenguin wifi dongles).
It runs just as well as Trisquel, other than that, and follows the Unix
philosophy a little more closely.
If you want to use a quality and simple OS (there's a single comprehensible
source tarball, for example) and learn some things about BSD along the way,
you'll enjoy LibertyBSD. :)
Sidenote: Absolute OpenBSD (2nd edition) is a fantastic book that outlines
some it's more obtuse but powerful features. You don't need it, but I highly
recommend it.
