I actually switched from a mac to a PC, and my next computer will still be a PC.
I agree however, that the mac is a superior machine, but I also think you get more for your money in terms of hardware, processor speed etc with a PC. The tradeoff is that you have to put in more time to maintain it in terms of virus protection, spyware, crashes...
So, I'd say it go with what your comfortable with, but if you're looking for something for a bargain go for a PC.