I apologize if this has already been talked about elsewhere ... I'm looking at purchase a new laptop between now and June. While hoping that the new MacBook/iBooks are announced in March, I was curious as to how much I would be able to tell the difference in processor speeds on the MBP. It's nearly a $700 difference between the 1.83 and 2.16 processors. The most I'd be doing is having ms office apps, IM clients, iTunes, etc., open at the same time (the normal college student stuff). Should I spend the extra money on the more powerful processor, or settle with the lower one? While this all could be a mute point when the MB are announced, the issue will still be the same. How much is the extra power really worth to the average user? THANKS!