Recently switched from Gentoo to NixOS. Not really sure if I will not switch back but so far interesting experience. Being able to define your entire system configuration with just a few files is really cool, plus it is really nice for setting up development environments.
On my Laptop I just run arch because I find it easiest, and it is mostly multimedia laptop. Same with my home server (NAS, self-hosted stuff, VR) where I just need rolling distro with good support for gaming.
Currently, I am using DWL and it is pretty nice. After moving to Wayland, I tried to use Sway for a while, but it does not really fit into my workflow well. But to be honest, even DWL is missing some things I want, and I am not really a fan of that it is written and configured in C. I am planning on trying to write my own tiling window manager in Rust when I have some time.