I need some advice on what type of PowerBook I should get. I currently have a TiBook 867 MHz with 40 GB HD and 512 MB RAM. Pop was spilled in it and it won't start up. Apple wanted $975 to fix it, so I figure it's just better to get a new laptop. I'm highly considering getting a new 12" or 15" PowerBook, but can't decide. I'm interested in people's experiences with these PowerBooks, especially with consideration to battery life and how solid they feel. Or does anyone think an iBook or used laptop would be better?