Alright, well I had to bite the bullet and bought the 13" base model MBP. I was going to give my mom my mid-2009 15" 2.66 MBP since I thought maybe the portability would be good for me with the 13". Now I'm sort of thinking, did I stupidly waste my money and should I take it back tomorrow? I spent $1,400 with the free printer and student discount along with applecare. Did I make a good investment? I just using it for graduating school in nursing.
If you really need portability, although it's hard to believe, the 13 is MUCH more portable than a 15. With a smaller bag, the overall size and weight is very noticeable when you are "schlepping" crap through an air port, working at a Starbucks or working on that little tray behind the seat on a flight.
The question though is: Is it worth it to you?