I currently have a old(ish) 2.16 GHz Core 2 Duo white Macbook w/ 2 gigs of RAM - so a 2 year old computer. I am thinking about buying a new 13" MBP because I would love a lighter machine w/ a bigger hard-drive, but if the new machine isn't going to be much faster than it might be silly to upgrade. Is there going to be a noticeable difference in processor speed between my current 2.16 and the 2.26 in the MBP, or are those not comparable? Are there enough other changes made to different things that would make the new machine faster? Thanks!