Hello, This may have been asked before but I did not find any very specific answers. Right now i have a 2.1GHz Early 2008 Penryn MacBook with 2GB of ram, but I am in need of a little bit more speed. Would i see a dramatic increase in speed in the new 2.26 MacBook Pro with 2GB ram. Also, would it be better to upgrade to 4GB in the new MBP? Thank you very much.