I got windows 7. Very very nice! Depending on your computer it could take up to 4hours to install though. Other than that its fast! and the features are damn cool also.
If you're the type to prefer a seriously minimal desktop—so much so that you choose a solid-color desktop over setting a custom wallpaper—you may be wondering why-oh-why Windows 7 takes so long to boot your machine. Turns out a bug in Win7 and Windows Server 2008 R2 causes a 30-second delay at login. Microsoft discusses the problem, potential solutions, and offers a hotfix here, though you could also just set a desktop wallpaper of your own. We've got tons of great suggestions for you, or if you're really set on the whole solid-color thing, you could just create a single-color image with your image editor of choice and tile it as your wallpaper. [Microsoft via The How-To Geek]