agreed.
I've a Mac and a PC. I love them together and hate them equally when apart.
Both Operating systems have problems.
They mimic each other in most results just sometimes you take a different path to get the result. for example, on the single button mouse you control+click for a right-click. Sure in windows its a right-click.
If you are more comfortable with a mac, get a mac, if not get a PC. If you are looking for the best animation machine out of the box for price/value and not so concerned about changing your workflow (then again maybe not) then like Gster said, make sure you get all your info straight. As no-biased as possible as it will benefit only you in the end.