You need a MAC for graphic design - me being a designer, I'm stuck with them. I hated macs, until OS10 - now they're getting up there on my list. PC is still my fav, so much more you can do, gaming, etc - but since the printers all want mac-based files, with mac-fonts, we use macs to design here where I work.
You should see my machine...it's smaller than a toaster. It's the mac mini, it's the size of 5 cd-cases stacked up.