I know that I’m not answering your question, since I have chosen not to update to Windows 10 thus far.
I just want to point out that if you do, you should read the Privacy Policy very carefully, including the fine print- and make sure you do your research first. Apparently Windows 10 collects data about you the same way that Google does. I’m not saying that it’s a bad idea, just that you should look into it more first.
(I guess that’s what you’re doing here… but maybe check up from some more reliable sources.)