About this plugin/product that doesn't make me sound like some gushing fanboy with a teenage crush.
It is a solid piece of software that will only make life easier (and if you worry about backups and data loss... a bit less stressful) if you manage multiple wordpress sites.
Their customer service is fast and brilliant. I had issues with a site using Worpdrive (due to my own issues -- go me!), but they quickly figured out and addressed the issue.
If you are looking for a solution to manage multiple sites with then this is the plugin for you. Add to that the Worpdrive for backing up... a great UI. It's a win-win.