I don't understand the constant (almost always unsubstantiated) criticism of the *BSDs from many Linux advocates.

Personally I evaluate each OS by it's merit, and I've concluded that OpenBSD, FreeBSD and some Linux distributions(I use arch btw) are solid operating systems.

On the server I prefer FreeBSD because of it's amazing flexibility, and stable yet evolutionary base system and in my opinion, superior init system. Simple RC scripts FTW.

I use Arch Linux for superior software and hardware support, related to client usage.

I use OpenBSD for various network appliances.