Not sure if this has been asked before (search did not find any threads), but what is the easiest/best way to upgrade from an iPad1 to an iPad2 and transfer all your programs and data? Do a complete backup of the old device, plug in the new one and let iTunes do the work? What data, if any, does not get transferred that way (full disclosure: I usually don't keep ebooks or MP3s on my harddrive after I put them on my iPad)? Is there some kind of backup/restoer program I should be looking for? Something else completely?