I’ve been using Debian. I’ve never understood the attraction of Ubuntu, which is basically a corporate relabel of Debian. If I were really cool, I’d presumably go for Nix or Guix. Maybe someday. I switched from Fedora to Debian some years ago over some drama whose details I’ve forgotten, and have been happy with the move. Arch tries to be more up to date with everything and I guess that’s good for some users, but I like stuff that is stable, with an upgrade every few years.