The first thing you’ll do is figure out how much space you’re currently using. In this article, I’m going to assume that everything you’d like to move over to a new computer is on your current Mac, but if that’s not the case (and you want to, say, put on an additional 500GB of music from an external drive), be sure to keep that in mind. The most important consideration for any machine you buy is how much storage you’ve gotta have. Since Apple announced upgrades to the MacBook Pro and MacBook Air lines-not to mention a completely redesigned MacBook-I figured that some of you would like advice on picking a new model that meets your needs.