I have a rev. A dual 2GHz G5. I absolutely love it, it's just insanely fast. I also have a 12" iBook which I use constantly because it's so convenient. I hate to see the G5 go to waste -- I do use it for GarageBand and some programming and occassionally some video editing, but that's not an everyday task. What I'm tempted to do is trade it (or sell and use the money) for one of the new 15" 1.5GHz PowerBooks (my wife says if I do that she'd like to have the iBook). But I have a couple of concerns: Will I miss the amazing speed? I love the portability of the 12", will the 15" seem big to tote around? I take my Mac to work every day. My G5 has a 9800 and is ready for Doom 3. Will the PowerBook handle it? I'm not a hardcore gamer but I do like the id games. So what do you think? I do love the widescreen of the 15". I sorta wish I could pay more and get a higher resolution LCD and a faster processer (who doesn't?).