Buy a Mac, it helps my Apple stock!!

Seriously I have both (well Macbook) and just recently my PC crashed and I bought a new PC. My biggest reasons for getting a PC were that I couldn't easily run HEM on the Mac and price (somewhat less of a factor).

Macs take some getting used to but once you get it they are very easy to use and user friendly. I definitely agree though that it just depends on what you want to do with it as to which one you should get.