That depends on you, and what you prefer. Macs are generally nice systems, but they're also expensive. If you feel you'll use the Mac side enough to justify the price, get one, otherwise get a cheaper PC.
I am a 3D modeling/ animation student. My mac slows down some times when I use maya, after effects, and mudbox, so I was thinking of getting a new mac. But, some of the applications that I need to use aren't available for mac. My questions is, is it better that I get a mac and use boot camp or do I buy a new Windows pc.