I'm making my purchase today and have narrowed it down to two machines. With an educational discount I can get a new 12" 1.33ghz PB 80gb/256ram/bluetooth/APextreme/Superdrive for $1712. I also plan on purchasing Applecare and a Extreme Base station taking the final price to $2130. I will also buy 1gb of ram but not with initial purchase. My second option is a refurbished 15" 1.25ghz 80gb/512ram/APextreme/Superdrive for $1899. The portability of the 12" is great and screen size is not that important since I have an external monitor. The 15" does offer a little more expandibility and the speed does not seem to be that far apart. Any thoughts as to which machine I should go with? I will use my laptop as my main machine and mostly for digital photography.