I have a positive experience with Turris Omnia. It doesn't run OpenBSD, but it runs OpenWRT-based TurrisOS, and also supports LXC containers (generic ARM-based

I have a positive experience with Turris Omnia. It doesn't run OpenBSD, but it runs OpenWRT-based TurrisOS, and also supports LXC containers (generic ARM-based Linux distros like Debian, Ubuntu etc). By the way, it's possible to install PiHole inside such a container. Besides that, it has builtin WiFi (2.4 and 5 GHz radios) and a plenty of hardware resources (2 Gb RAM, powerful CPU).