theres a special going on at my school and the 17" 1.67 Powerbooks are only $179 more than the 15" Powerbooks. with the 17" i get a bigger screen, 20gb's more, and 128mb v-ram instead of 64mb. the only thing i'm worried about is that it will be TOO big. i'm not going to carry my laptop EVERYWHERE i go, but i would like to bring it with me to school a few times a week and take on trips and stuff. has anyone found it inconvenient to travel with because of its size?