Do you feel that one has displaced the other? I have an iMac and will be buying either a MacBook or a MacBook Pro (I was ready for a MacBook, but the Pros look so very pretty now) this weekend and I was just thinking about the usage of both. I'll be using the laptop once I begin school and I'm sure it'll see it's heavy usage once that starts, but I'm wondering if that many people actually divide their work between the two.