I just ordered a new MacBook Air as I'm going to be doing more traveling with my job. I also have an iMac that I bought less than a year ago. I'm thinking there is a good balancing act between having two computers as far as what apps to keep on the Air and what files to keep where. I'm thinking the cloud may be a good option for some of my files (have Dropbox now). I also have a single USB drive that I use for backups, but thinking I may need a second. Just wondering how some of you balance having two computers and decide which apps live on which machine. I think the last question will answer itself after I've had the Air for a while. Thanks for your input!!