Hands down, Carbonite has the better prdcout. Unfortunately, Carbonite doesn't seem to want additional customers. I huge portion people I know, including myself, use external drives for things like photo, video and music storage. Most laptops have way too small of hard drives to store all of this on the C: drive. Unfortunately, Carbonite will not back up anything on an external hard drive. So caps and all, Mozy is a at least a useable prdcout and Carbonite is worthless. And Mozy gets my money every month.