I have hsed windows 7 and 8 and 8.1 before
I loved 7 and now after windows 10 I liked windows 10 now . It because of its advance features
As now it has a beautiful search engine that is cortana which not just search thing you type but also search which you say
It detect your voice and do lot of tast for you
Interface is also good in this windows
Settings are easy to search . Just type some thing related to that particular setting and it will bring you to that page
Microsoft has done a brilliant job in windows 10