This plugin served my most basic need--a way to preserve recent backups to a cloud drive. In my case I used Google Drive, and it works very well. Scheduled backups are reliably executed and I get an email notification when it is complete.
Only knock on Google Drive backups is that it requires a few extra set up steps when compared to Dropbox (i.e. authorization, client ID, client drive secret). That said, it's a stepwise process, and once it is complete all you have to do is set it and forget it.