I am the happy owner of a 12" PB, and have been for the past two years and 3 months. Well, apple was ever so kind and decided to produce the new video iPods with USB 2.0 only, and not firewire. My 12" PB (rev A) does NOT have USB 2, otherwise it is a perfectly good machine. I have been tossing around the idea of e-baying it then upgrading to the 1Ghz (rev B) version which has USB 2. But then at work the other day I was working on a 15" compaq laptop someone brought in (im a student and work at the IT helpdesk at my university) and i really enjoyed the larger size screen. I dont know why this one struck my interest, i work on tons of 14" or 17" and 15" screens but for some reason when working on this one i enjoyed the 15" (i think it was because i was just working on a big excel spreadsheet on my 12" screen and realized how much nicer the 15" was) So that made me think I should swap in my 12" for a 15" since I want to upgrade anyway. My only concern is portability. I LOVE the size/portability of the 12" and i know the 15" isnt that much bigger but i am worried that even a slight increase will have me carrying a load of bricks around all the time (btw i use public transportation and walking a lot to be clean to the environment so i often have my laptop in my bag on my back) So anyone with a 15" out there who thinks its too much to carry around frequently? or who enjoys carrying it because its not that heavy? I am usually a die-hard 12" fan when it comes to portability, but maybe i should re-think this. . . the only way I would be able to tell for myself is if someone let me borrow their 15" for a couple of weeks, but i dont think that will happen!!!!! well, let me know! thanks, hope you dont mind another unusual twist on the 12" vs 15" !!!!