I'm gonna buy my first macbook. But I really can't decide which one is the better choise: unibody mac 2.0/ 4gb /ddr3 1066 mhz OR white 2.0/ 4gb/ ddr2 667mhz...?? White macbook is a freaking 200euros cheaper and i'm not that sure is there any huge difference between ddr2 667mhz and ddr3 1066mhz.. So why should I spend 200e more to the unibody? I just wan't to make the right decision. Thanks guys..