In my search for a backup distro, I increasingly find myself preferring to be on Manjaro more often than my primary distro...Linux Mint. I'm typing this post in Manjaro. It's still too early for me tell if I can depend on it. In my case Linux Mint hasn't had a update that broke it, in years. On the other hand, I may gave broken it a time or two. However if things continue to work well in Manjaro, then it's possible that Linux Mint will become the backup distro to Manjaro.