The following presents a historical overview of the competition between Apple and Microsoft in the operating system market leading up to this year's face off between Windows 7 and Snow Leopard. History reveals that the hardware decision isn't going to be based primarily upon features.
The operating system most users end up with will depend upon what hardware they choose to buy, not the specific feature details of the software that system happens to run. AppleInsider has published an in depth look at the competitive origins of Windows 7 and Mac OS X and why the products aren't really direct competitors.
