Another thing the Dell doesn't have is the iLife suite of software, which really is good enough to warrant being figured into the price. I know that iTunes is a free download for the PC, but the rest of it isn't. I would personally argue that iMovie and iDVD alone close the price gap by a few hundred dollars, and if you do photography, I have yet to find a free photo organizing tool that I like better than iPhoto (especially the new '08 version).