Would really appreciate your input. I change my mind often but it's time for a final decision. Considering the following points what would your choice be? - Price is not a concern. - It will get a LOT of use on my lap, couch, lazy boy, patio, coffee shop, used 8 to 12 hours a day, I bring my notebook 'everywhere' - work, home, cottage. - reading and replying to 100+ emails a day, light concept/mechanical drawing, Sketchup, no Auto Cad, light video / photo editing, (photoshop), lots of net surfing, reading blogs, forums, no gaming, light entertainment, movies etc. I'm considering: 17" MBP with 24" ACD and MacBook Air 15" MBP with ACD and MacBook Air 13" MBP with ACD and MacBook Air 17" MBP with ACD 15" MBP with ACD 13" MBP with ACD I haven't quite decided whether or include the MacBook Air and work from two computers or if I'm best to settle on one machine rather than shuffling around two notebooks. * I have the ACD already, in reality it doesn't get used much, I rarely work from a desk. I have a desktop and only use it for storage, back up and server and don't enjoy working from a desktop as much as I do a notebook. What would you buy?