Here's my dilemma, I can afford a refurb white snata rosa 2.0ghz from the apple store, or 2.0ghz core duo blackbook off of ebay. The blackbook is under warranty until June, so I'm not to worried about the random shutdown issue. I know that the sr book should perform a lot better, but I'm drawn to the blackbook for its looks. I'm not really that worried about performance, but I am concerned about heat issues and battery life. Can anyone tell me from experience how much cooler the newer books are? How much battery life would I be sacrificing by going with a core duo macbook? Thanks!