Currently using ubuntu-based distros "elementary OS" and ...
So just an update that I've been enjoying elementary OS very much. There were some minor glitches and annoyances and because it is open source I submitted some code changes which got accepted and fixed some of the issues.
Now I've again recently started poking around the OS and submitting some patches so the core developers were kind enough to invite me to their private Slack channel and also made me a member of their organisation on GitHub! See https://github.com/orgs/elementary/teams/desktop-developers/members
Some of the commits and pending pull requests:
https://github.com/elementary/scratch/commit/728d0d85455c48f96c2f0d425c9e462a8a626da8
https://github.com/elementary/greeter/commit/0339a4e3eef38cd9218dc0aa72668827c9dad03d
https://github.com/elementary/greeter/pull/53
https://github.com/elementary/greeter/pull/51
https://github.com/elementary/files/pull/43
https://github.com/elementary/files/pull/38
https://github.com/elementary/files/pull/16
Woohoo! Mini show off!