Macs are pretty sweet out-of-the-box for artistic types, but it's kind of a self-perpetuating stereotype at this point -- because arty types tend to purchase Macs, Mac tends to slightly tilt their specs toward arty applications.
On the other hand, it's fairly easy, and often cheaper, to build a PC oneself that can exceed standard Mac specs. Macs also fail when one wants or needs to upgrade later but would simply prefer not to replace the whole thing. Of course, Macs excell in space-saving design and, i admit, even my half-sized and ostensibly "portable" PC tower can seem rather bulky when compared to the current generation of Macs.
Macs, at this point, are pretty much a status symbol and more bourgeoisie than utilitarian. They're essentially form over function these days when, at one point, their cost actually reflected quality.