I've been using an iBook (12", G3 600). I'm ready to buy a new ?Book, but I'm not sure which one. One of my concerns is battery time (14" iBook: 6hrs vs 15" PowerBook: 4.5 hrs). If I get the 14" iBook, I'm getting the following features: Superdrive, 1.25_ G RAM, 80 Gig Hard Drive, Airport and Bluetooth. If I get the 15" PowerBook, the following features: Superdrive, 1 G RAM, 100 Gig Hard Drive, come with Airport and Bluetooth. I plan on using the Macromedia package, maybe Final Cut Express, Office X (no need that I can see to upgrade to Office 2004 yet), iWork, iLife. I'm in grad school, so I need the laptop for creating and showing presentations to my students and professors. I also need it for scientific work, I work do a lot of biology and psychology research - so I need it to store and calculate large data. With all my features added on, the price is only $300 more for a PowerBook - not much and just the right amount from my tax return. BUT, since I need portibility, the 6 hr. battery life looks good. With the added features and my use of the iBook - will I get the same battery time out of both? Any advice is GREATLY appreciated! Thank you!