[thephilosophizer]

There is one specific drawback to Macs to consider before buying.
You can't play games on a Mac.
This doesn't matter to everyone, but most windows based laptops in the $1000+, can play a moderate to high selection of games.
Yes, the macbook, and macbook pros do have nvidia gpus, but there are very, very few games made for the Mac OS.
Yes, you can install windows on a mac, but for one, the track does not work well in windows because windows does not support multi-touch (though I have heard rumors of this being supported in windows 7). And really, if games are an important part of your agenda, then a mac isn't the way to go.
But, if you focus is anything and everything besides pc gaming, then a Mac is the way to go. I keep a desktop pc for gaming, etc, and I keep a macbook for work and anything that involves moving around.
You will be hard pressed to find a more capable, more well built laptop then the new unibody macbooks (not to say there was anything wrong with the former ones, but the unibody is just the best there is).