OS Shootout 2003: Mac OS X vs. Windows XP vs. Linux: Great article comparing these three OSs in a matrix with rows for UI, wireless support, CD burning, etc. Good place to see what the different OSs are better at. I only read halfway down the list, but it looked to me that Windows XP was coming out on top. Via LockerGnome.
XP on top? Beauty in the eye of the beholder perhaps. (But who am I to talk, having spent so little time with XP.)
It seemed to me that the author is obviously more familiar with using Microsoft products. I didn't go through the whole list, but way too many of the items that the author seemed to have difficulty with on the Apple side are either non-issues or he's terribly misinformed in regard to OS X.
Let's see if I can do this without my Mac bias showing. All in all this seemed like a pretty even comparison. After considering the comparison you are left with "which one works better for my situation?".
Some issues I have with their chart: