Just in case you need more convincing.... Get the Mac. You can run Windows all day on it and slowly transition to Mac OS. Or jump right into Mac OS and run Windows virtualized only when you need to.

The OS learning curve is there simply because it's a bit different, not because it's any harder. When it comes to picking a desktop, the choice in machines can be a little more complicated, but in a portable, not much out there can get close to a Mac Book or Mac Book Pro on value versus specs and versatility.

I only wish I could afford a new Mac right now. I'll be using my current PowerBook until at least the next MBP revision. It's now 3 years old and still running like a champ though.