You have to ask yourself how much longer you're actually going to be playing WoW. Most people are "addicted" for only 6 months to a year at the most, so if you get a Windows laptop just for WoW, you may regret it in a year's time. On the other hand, the PowerBook will appeal in other ways even after your WoW addiction. Also, the PB will be able to play WoW fine. Not as good as a Windows laptop with similar specs, but good enough so that the graphics don't hinder the game play. I say get the PB.