Advertisements These units are basically the same, right? I know the 800 has the Firewire input on the front and the 400 doesn't. The 800 came stock with twice the harddrive space. Other than that, they're the same, right? I've got an 800, and waiting to pounce on a 400 with a blown hard drive. Will the 400 take the image from an 800 (or vice versa)? Has anyone tried this?