If a company is on Windows, let it stay there. Equipment is much cheaper. Windows is easier to learn and as an administrator it also so much easier to maintain systems. I personally am a Windows guy and it served me and the companies I worked for well over the last 2 decades. I have also a Mac, but I simply don't see how an employee can get productive with an OSX based system. The only company that can ruin the day for Windows is Microsoft themselves. If they keep on pushing aggressively Windows 8 to their customers and it won't be felt as productive as Vista of Windows 7 then alienation could be their faith. Microsoft should look at why so many have chosen Windows (and Mac was also their all these years) and not why they should look more like Apple. I like Windows, it never let me down.