Oh, man, seriously, you guys wanna have this debate? Please, let me squash this for you. I've gone back-and-forth between the two, and they will both get the job done. However, this is about SO much more than just personal preference.
First of all, there's something to be said for the fact that everything is proprietery-lisceneced for the Mac. On a PC, it can sometimes be a hassle, making sure everything is compatible -- this software doesn't work with that hardware, that hardware doesn't work with that motherboard, wait, which driver am I supposed to download? For crying out loud, with a Mac, it just all works.
However, if you know how to get through it, you can get through it. I've never needed to bring a PC in for any repair or installation or anything.
The flip-side of that argument is that the very thing that makes PC's relatively more difficult to work with is exactly what makes them preferable to work with. When it comes to variety of software and hardware to choose from, there is no comparison. Your PC can be perfectly tailored to exactly what you want. And again, if you know your way around one, you can do it all yourself.
So, in a nutshell, PC's are for people who know how to use computers, while Mac's are for people who need someone else to wipe their ass.
But that's not what really sets them apart.
My PC:
Dual-core Athlon Phenom 2 550 3.1 Gig processor, 4 Gig RAM, NVIDEA Video card, 64-Bit Windows 7, 2 seperate 1TB 7200 RPM hard drives, and a 1TB external hard drive. Now, that's no supercomputer, mind you, but it ain't nothin' to throw a stick at, either. And you know how much I got all of that for? Less than $1,000.
Suck it, Mac-heads! Suck it, hard!