I searched the forums, and people that had questions about which of these systems to purchase were mainly comparing features such as LED display and battery life. I will be primarily using the system during photo outings to process photos, and as a mobile station at home. I have a desktop system with great screen space, and I wanted to sort of keep my desktop and laptop separate. Any 17" Macbook pro users out there that carry their 17" around a lot? People that mulled over this decision before: What convinced you to go whichever route you went? I normally come to you guys when I have to many +'s and -'s to decide 17" laptop bags seem scarce also.