I posted this in another thread but no one has seen it yet, so I figured I'd make a new one and get it out of the way. My question is what are the real-world performance differences between the two new 13" MBPs? It is a pretty significant price difference (about $250 when you configure with the same HDD) to jump from the 2.4 to the 2.66, so I was wondering whether you all feel it is a worthwhile expense? There has been a lot of talk about the differences between the i5 and i7's but haven't seen this covered yet.