Boomerang is the consumer arm of UK-based DATABarracks, and features a well-designed and flexible user interface. A wizard lets you select from organised lists of file types and helpfully integrates with Outlook. Backups can be scheduled or files backed up when the PC is idle for a few minutes.
When restoring, you can view thumbnails of your files, and unlimited differential file versions are stored in case you need to roll back. The account integration allows you to change your details or upgrade your plan without leaving the client software, and you can log in to the website and restore files using any PC.
Boomerang’s added control and flexibility makes it well worth paying the £24 over Mozy. It takes a different approach to Carbonite, but the fact that it can be used on an unlimited number of PCs widens its appeal. Bear in mind at the time of review it was in the final beta stages with a few significant bugs, so wait for the final release.