I find that the order of most user friendly to least, in terms of the "big 3" BSD's, is FreeBSD, OpenBSD, and NetBSD. But a lot of people love OpenBSD; personally I like it because it has the boggle command line game.

Imo OpenBSD on laptop, FreeBSD on server/desktop. But they're both great and I don't think you'd regret either one on any system :)

Openbsd is consistent and minimal. Works out of the box with sane defaults but slow Wifi and IO, no bluetooth nor docker.

FreeBSD is more complicated, less consistent but also faster and integrate novelties such as zfs, wayland, BT ...

I personally prefer openbsd to FreeBSD, but still use Debian Linux for my laptops and servers.

I have OpenBSD on my Thinkpad T480s and pretty much everything worked great out of the box. Even something like the Volume buttons that on Linux with DWM I had to manually map to amixer they just work. Of course there are some trade-offs. Bluetooth is a big one that might not work for people. Overall compared to FreeBSD the setup was dead simple with hardly any work. I know people complain about speed on OBSD, but I have not noticed it being that much slower. I am in love and don't see myself hopping again for a while (famous last words obviously).

One aspect to consider is hardware. OpenBSD seems to have better hardware support for certain laptops, namely Thinkpads.

OpenBSD feels more cohesively designed, in my experience. If you have an older ThinkPad lying around, it should be a dead-easy installation and a pretty easy setup process. Back when I used it on a laptop, I liked its design but I didn't find it practical for my workflow compared to Linux and macOS.