Macs - are great for people who just want internet and do some form of audio/video/graphics work... other then that lack of 3rd party support and gaming are the two largest draw backs. They are more expensive but hold their value better then windows machine.

Windows - cheap and windows can be quirky, but overall it is the standard for PC computing. support is far superior and you do have option of hand picking your setup/brand.

i grew up on mac and i am a windows network administrator... i use windows b/c i can do everything and more than mac users.