So I'm buying a laptop for college and I want an apple. I'm going to a 2 year college to become a X-ray tech. I don't get my schedule to know exactly what courses I'll be taking until June 29. I just dont know what one to get (white2.13GHz . aluminum 2.0 GHz or aluminum 2.4GHz) I dont know much about computers in general so im just looking at cost to output idea. I also would like to know what if any upgrades I should get. Thanks for all of your help.