I purchased Windows 7 Enterprise addition online from last year. I install it in my office main desktop computer. This version of windows is really very cool for looking and best for work. There is not any complain about this version. The enterprise addition is make specially for business. There are many unique feature which help in business. I like its display Tab changing facilities. When I press Alt+ Tab, all tabs are appear in 3D format I can choose any of option using this key press. No more errors are in this version. and if any error display windows remove it automatically during windows update. That is the reason why I am liking this software of windows.