Hey everyone I'm sorry if this questions has been asked before but I just can't seem to find the right keywords to find the right threads with the answer I'm looking for. I currently own a 13" Aluminum Unibody MacBook running a 2.0ghz processor and someone wants to trade me for a 15" Penryn MacBook Pro with a 2.4ghz and I was just wondering if this is an upgrade a downgrade or just an equal trade. Besides the obvious differences like the bigger screen and the new design what else would I be losing/gaining by doing this trade? My understanding is that the FSB is much higher in the unibody as well as the new DDR3 ram compared to the previous DDR2. Are these big differences? Whats the better choice? Thanks. Sorry it's much longer than I thought it would be.