I'm starting to think about getting a new computer. I'm fine with either an Air or retina Pro, but I want something that would have (at least) comparable performance (in terms of running apps like iMovie, Garageband, and/or Xcode, though I can live without Xcode if I must. I don't use any of these apps to do actual work, just for fun) to my MacBook Pro 5,5. The specs of my computer: - 2.26 GHz Intel Core 2 Duo - [upgraded to] 8GB RAM - NVIDIA GeForce 9400M 256 MB - OS X Mavericks (10.9.1) My budget is somewhere around $1,300. I will buy refurbished in addition to brand new, and I'd be willing to compromise on things like graphics. Thanks in advance for the help.