I use both and have been using Linux more lately because I need it for my external drives anyway. Though BSD is a reason why I'm reluctant to commit to Guix, it doesn't run on any of them. And using GuixSD and configuring everything with it would be very cool, but would also mean being stuck on Linux (LTS kernel), and Linux is probably not a good thing to be stuck on, it's probably a sinking ship, a sinking ship that increasingly glows in the dark.