As a PC user I am looking to convert to Mac soon and i'm thinking about either: - A high spec 15" MBP - A low spec 15" MBP and 23" monitor - A low spec 24" iMac and low spec MBA I'm looking for day to day portability (going to college etc) but I also prefer the idea of a much larger screen when back at home. My question is regarding the last of the 3 options. Do Macs have the in built capability of syncing particular files and/or folders automatically between 2 Macs? Eg. say I did a days work on the MBA, brought it home and the data was automatically duplicated to the iMac when in wireless range of each other, and vice versa? Or should I sacrifice portability and home power for less hassle and get a MBP with monitor?