Do you use the built-in WiFi on any of the Raspberry Pis?
By coincidence I installed NetBSD last weekend on a Raspberry Pi. Never used it before, but it seemed very nice. I had some issues with sshd (most likely just me doing something stupid) and never got as far as experimenting with WiFi, but supposedly there is some support (unlike FreeBSD and OpenBSD that do not support WiFi on any Raspberry Pis?).
Not with any of the BSDs, although I have tried. Instead I either use a USB to GigE adapter or a Waveshare carrier board (for the Zeros). The built in NICs for the ones that have them usually work fine.
If you really need wireless you can buy a USB WiFi dongle, and since there is a lot of support a compatible one is restively easy to find.
By coincidence I installed NetBSD last weekend on a Raspberry Pi. Never used it before, but it seemed very nice. I had some issues with sshd (most likely just me doing something stupid) and never got as far as experimenting with WiFi, but supposedly there is some support (unlike FreeBSD and OpenBSD that do not support WiFi on any Raspberry Pis?).