The CPU is kind of a big thing depending on what you want to do with it. iLife users and photo folks will likely notice the difference first, because those programs utilize the CPU quite a bit. Not talking about handling viewing of photos, but more of the time to perform various expensive manipulations and enhancements. If you plan to utilize Garageband, you'll also want the CPU boost as slower CPUs (like the stock 11") really struggle beyond two instrument tracks.
Of course, for iwork/office stuff, these seem to all do great. Probably works great for internet and flash apps. (But then again, if you are doing flash, some will want that 13 inch for the extra battery life).
Of course, for iwork/office stuff, these seem to all do great. Probably works great for internet and flash apps. (But then again, if you are doing flash, some will want that 13 inch for the extra battery life).