So, I'm looking to pick up a new MBP in the next few weeks, but I'm not sure whether to drop the money on upgrading to the 2.8Ghz CPU over the 2.53Ghz. I work in photography, using Aperture 2.0, Photoshop CS4 and some other management tools (which won't be that taxing, seeing as they run on a 2.0Ghz C2D desktop). At home I use an 8-core 2.8Ghz Mac Pro. In the UK, with HE discount (doing a Masters) the upgrade comes to about £210 to get the 2.8Ghz (I'll be getting a 320GB 7,200rpm and replacing it with a 256GB SSD when they reach the right price). Money isn't really an issue, but I don't want to spend it if the actual performance increase is minimal. So. 2.8 or 2.53?