I'm going to get a new 13" Macbook Pro soon and I'm tossing up between the 2.26 and the 2.53 Right now, I'm on a 2.16ghz Core 2 Duo 15" MBP, 500gb hdd ad 4GB ram It's used for Photoshop, Illustrator and InDesign, as well as normal web surfing, itunes, etc. I'm wanting to go for the 2.56ghz model since I might as well get a big step up from what I have now, right? Rather than getting a 2.26 with 4gb ram? I was reading over on macforums, and everyone says they wont notice the difference between the 2.53 and 2.26, but I'm not sure if they were buying it for just word processing and web surfing? Is it worth spending the extra $500(aud) to get the 2.53ghz model? Does anyone have a 13" unibody pro? what are you thoughts on it?