I have a distinct distaste for Mac. That being said, I think there is a little more here: when I started at my current gig we were using Toshibas - not cheap ones either, these were top-of-the-line. 1.5yr down the road they could no longer perform the exact same job that they started out with. The same can't be said of my Dell: it's a work horse more than 2yr later.

With Mac you can't loose. PC (especially laptops) can be hit and miss.