From install to mission accomplished this extension is Solid, Intuitive, and Done without fuss or muss (excepting one helpful and needed precautionary warning about tmp directories and zipfiles). Using defaults right from install, a couple of clicks a wait shorter than download of the backup, which is simply another click and EVERYTHING (files, directories, SQL database, etc.) is backed up for manual or automatic re-install (automatic using the kickstart program - one of the other downloads mentioned in reviews here)to the original site or a new one. A well-done user-guide is also included . . . definitely a must have and a should make a support donation add-on for every Joomla site.
It is a bargain and fills a niche not otherwise well served.