I used Upstart, and I briefly tested systems with OpenRC. I wasn't really happy with the configuration tools or the service file format with Upstart, and actual

I used Upstart, and I briefly tested systems with OpenRC. I wasn't really happy with the configuration tools or the service file format with Upstart, and actually Ubuntu's attempt to do a kind of hybrid between a traditional SysV init and Upstart, and now a hybrid with systemd (the "service" command somehow still exists on Ubuntu!) was one target of my ire in the comment.