I haven't really thought all of the details out yet, but I'd thought I'd get your guys' opinions on this. As some of you know, I currently have a 1 GHz 12" PowerBook G4. Well, to be honest, I haven't been very happy with it. When I set out to buy a laptop about three months ago, I talked to an Apple salesperson at the Apple store at length about my needs. I said that my main concern was speed because the reason I was buying a new computer was to crunch some data for a new project I would begin soon. I told him that I would need to keep the computer on for extended periods of time using virtually 100% of the processing capabilities. Obviously, he recommended the G5, but I also wanted something extremely portable. In the end, he told me that the 12" PowerBook was my best option because it combined both power and ultra portability. But this computer is far from being powerful. My project is being distributed among several computers (all laptops) and the PCs are kicking my butt. Plus, it gets extremely hot after being on for about a day, so much so that I feel I need to shut it off to give it a rest and cool down. Not good for my business. Recently, I was using a PC laptop with Windows XP, and it's actually not that bad. I had never used XP before, but once I did I realized how far Windows had come since 98, which is what I had the most experience with. So, should I ditch this awful machine and get a laptop with windows? If so, what brand/model is recommended? I still want a small portable with a good amount of power... Thanks for your input.