Mac
13
p.s. i might be getting a new computer for x-mas do you really prefer mac's over pc's and what are the pros and cons of each?
Cons:
PC's can run more programs than macs can
PC's are cheaper
PC's are More commonly used
Pros:
1)Viruses are rare
2)round pixels are better for video editing
3)Programs can run on less resorces (ex James bond game can run on 750mhz windows and 450 mhz mac)
4)Apple actually SUPPORTS their OS as Microsoft takes ages to awnser 
5)Less security holes in the OS
IF you want a desktop from mac try an eMac.
and if you want windows you can buy virtual PC and have the choice on boot to run windows 2000 or Mac OS