They're both the same and do the same thing. Saying that macs are better for design is bullshit, they run photoshop just the same. That might have been true in like 1995 but not anymore.
I use both and Mac OS X is a lot nicer and easier to use than Windows and you dont have to worry about viruses and all that bullshit. If you like to play games at all get a PC.
I use my mac to do all my work (photoshop, dreamweaver, microsoft office, etc) . All these programs are identical on the mac and the PC.
I use my PC to play a lot of games and test the sites that i build.
There really is no difference other than how the operating system works.
So i'd say Mac's have the edge in that respect. If its about price PC's have the edge since you can build one yourself. But if you compare a high end dell to a high end mac its about the same price.
