I don't agree with Mr. Jackson's "Windows or Mac" argument at all, because it absolutely does matter. The folks at Microsoft design their operating system to be compatible with PCs and computer manufacturers design their PCs to be compatible with Windows Whatever. But when you buy a Mac, you're getting a well-engineered machine that is designed specifically for the operating system, and an operating system masterfully-designed specifically for your Mac -- not to mention Apple's top-notch customer service.