Hi, Any advice with which model to get? I'm interested in the extra battery life from the new 15" MBP's LED. However, I the extra resolution option for the 17" is very tempting. From what I remember, the 17" model is gigantic and unwieldy. Then again, I've only seen it chained to a table at the Apple Store and have no experience carrying it around. My main use for this would be graphics (Illustrator, Photoshop, Flash, and some 3D work). I'd be carrying it around in a laptop backpack and only flying once a year. Please let me know your opinions. Thanks!