Ok, here is my situation. 3 weeks ago I bought a new 2.4ghz unibody macbook. I had it for just over a week when a financial crisis came up so back to Best Buy it went. Since I got a killer deal on a 2.5ghz 15" macbook pro, early 08 model purchased by a mac store employee in Dec 08 and I just got it from him. I now have it pretty much sold for enough for me to buy another 2.4 GHZ unibody macbook. Im a noob to mac so my question is which one of the two above mentioned computers is better? I do not do any video, music, or picture editing. I do however use cad software. Any help, advice, and opinions will be greatly appreciated. Thanks in advance.