I always wanted a Mac, but in Germany it is almost impossible to get, at least in the early 2000's in Berlin.
When I came here I was web master for a newspaper, the online version. I finally had a Mac and was not impressed. Hated it really. But that said I must qualify that with the fact I had about 200 Mm of space left from earlier users and was not allowed to do anything about it. New Macs were ordered but arrived after I left. So it may just be the Mac I had that was bad.
Now in Juneau I have to go to Anchorage (5000 miles and a commercial airplane flight) to get to the nearest Mac store, no one sells or services them in town.
Every other job I ever had used Windows. All my software is for Windows. Not a big fan of Virtual machines. If you take care with a PC you can avoid viruses.
In the end, I would have to say Windows is the easiest to deal with as far as servicing and getting software for in the store. Also if price is an issue.
Have you worked with a Mac at all? It is a different OS and takes time to get used to... what if you don't like it? I would try to find one to play with first. Maybe the local IT teacher at a school, both my daughters Elementary and Middle school use Macs, they may be of help.
One last note: Happy "National Macintosh PC Day" (Jan. 25th) !!!!!!!!!!!