Pi-hole or AdGuard for home dns-based blocking?

Hey folks, I just realized my pihole server, running on a Ras Pi 3 needs to be rebuilt from scratch. I've seen many mentions of AdGuard DNS here though. What's your thinking on which is better now?

We're a small family, looking for a basic ad blocking, set it and forget it, solution.

EDIT: I'd prefer the software be open source.