I would think preference for small vs large ipad would be driven somewhat by the type of computer one owns. If I owned a MacBook Air 11in, I would be less inclined to by a full sized ipad, since they are too close in size. I own a Mac mini, so the full sized ipad is a nice complement to the desktop. I am not saying it is a complete laptop replacement, but for much of what I do, it is more than sufficient.