I have a first-generation (pre-November 2006) MacBook (2 GHz Intel Core Duo). It is now out of extended warranty and needs a logic board replacement, which will cost about $350. Would that be worth it or would I be better off buying a new (mid 2010) MacBook (which would be about $900 with student discount)? Or maybe buy one of the second-most recent models (Late 2009)? Argh.