OpenBSD for laptops, VM guests, and VPSs. It has a very coherent userland, and the devs dogfood heavily, my go-to for anything I have to actually administer.
FreeBSD for servers and NAS, desktop. FreeBSD has high performance all around, ZFS, jails, bhyve, linux compatability, etc. But it's not as nice to administer as OpenBSD. I want to love it, but it's tedious.
NetBSD is an OK choice for anything, and very capable, but doesn't stand out for anything other than portability. If you enjoy hacking on things, you might find a lot of use in it.
FreeBSD for servers and NAS, desktop. FreeBSD has high performance all around, ZFS, jails, bhyve, linux compatability, etc. But it's not as nice to administer as OpenBSD. I want to love it, but it's tedious.
NetBSD is an OK choice for anything, and very capable, but doesn't stand out for anything other than portability. If you enjoy hacking on things, you might find a lot of use in it.