Heya. I'm planning on getting either the 2.2 or the 2.4 MBP. The problem is, they seem to update the MPB all the time. Will I still be happy with my MBP in a few years? because I can't afford to update all the time. Will these versions be okay with Leopard for example? I'm planning on using it mainly for school so not that much gaming etc. Just some 3d rendering as a hobby.