my mom just came from the states & she got me a 2.4Ghz macbook aluminum. she bought the unit a few days before the release of the new mbp. i was actually eyeing the 13"mbp because of the long battery life, firewire & sd card slot. but im kinda worried about the built in battery, coz if it conks out, it might be difficult to replace the battery. should i stick w/ the macbook aluminum? or sell it & get myself the new mbp?