Recently I have updated my windows from windows 8 to window 10, and the experience is really good the features are much more improved then all others previous windows. So for that I have rated 4 star instead of 5 star, I have given 1star less rating just because the purchased price of the windows 10 is little higher for new features as compared to previous windows.
So if you take my suggestion, then I will suggest that if you are not using much computer in day or month then you can go for windows 8 or 7, but the use of the computer in your life is much more, then you should definitely go for windows 10