The fact is, the majority of people use Windows, so normally I might say, just for the sake of the rest of the world, and very reluctantly, get a nice PC. However, this is not a problem anymore because Macs can run Windows through Boot Camp or Parallels, so you can run any Windows software! So now I will say: get the Mac. You will not regret it.
The bonuses of a Mac are:
The OS is far superior to anything Microsoft could put out and you will love it.
No viruses! Just make sure to scan any files you might send to any Windows users as they might contain Windows viruses (viri? :P) which could infect them (but not you).
Much easier for creative work. You've heard this before. Macs are soo much easier for anything creative, so if you major in anything like graphic design or whatever you will not regret the Mac.
For more, just look at these:
http://www.apple.com/getamac/works.html
I hope this helps...and steers you toward a Mac! 😀