I like the Backup add-on from the official Kodi repo. You can specify which parts of Kodi to backup, whether to zip (compress) the backup, where to backup, set a schedule, and I think it can use cloud storage (never tried this). I have done a restore once to fix problems within Kodi. Since the add-on is in the official Kodi repo, it would seem easy to get up and running from a new Kodi installation. One caveat: with Jarvis, it has had occasional failures creating a backup. This seems to be "fixed" by exiting and starting Kodi again. Also, I backup to a USB drive that I keep plugged in all the time. I hope this helps someone!