I have 3 Macs (2 Mac Book Pro's 17 inch, and a G5) and and 12 PC's (mostly Quadcores and 2 Laptops).
I like both of them, and enjoy the MAC for anything to do with Music or Media, and invariably the software exceeds my expectations.
I am sure you can get great results for Rendering Video on your pc with the right hardware/software combo too. Good luck with it!
