Windows always works for me. If I download a program, I know that I'm not going to have to worry about any incompatibility. If I plug in my Wacom tablet and many other devices, I know there's a good chance Windows 7 already has a driver. If it's not built in, the manufacturer's website will surely have it. I rarely have issues with my Windows install, let alone any kind of virus that so many people speak of. Yeah a license for Windows might be costly, but it's worth it. Granted, I do occasionally get a discount on Windows for working in retail, but I would still pay the full price if I was building a new system. In addition to being able to play games.