I gladly give this extension the highest rating. I have worked with Joomla! for years and manage dozens of Joomla! sites. Akeeba Backup is standard on every site I manage. We use it not only for backup and disaster recovery, but as a quick and easy way to migrate new sites from a development server to a production environment. Deploying sites from an archive is so easy that we can deploy earlier versions of a site in a matter of minutes. We subscribe to the Professional version of the product and never deploy a site without it.