I'm finally pulling the trigger tomorrow and ordering a 15-inch, 1.25 GHz Powerbook with 512 MB RAM, 80 gig HD, and Airport Extreme. I am going to be switching from a 5-year old Compaq Presario, 500 MHz Pentium 3 with 184 MB RAM and a 6 gig HD. First, someone please tell me that my purchased is justified, and I am not going to feel guilty for spending $2000+ dollars on this laptop. I have been looking forward to this switch for a LONG time, and now that I finally have the funds to do so, I don't want to be let down. Secondly, I'm going to need a sweet new backpack to carry my prized Powerbook around in. Not a bag, not a sleeve, but a backpack. It's for graduate school so I wanna have plenty of room to lug my Powerbook around as well as other school supply type things. Can anyone recommend a cool backpack and possibly assuade my fears by telling me that the 15-inch Powerbook rocks?