If you stick with the automatic upgrade, just make sure to install Belarc Advisor (free) and record the Windows 10 set of installation keys somewhere safe - I sent an e-mail to my personal Gmail account with that info. This way, if the system ever crashes on you like it did to me, you have a
Just a follow-up to let all know that I re-installed Windows 10 this morning (Saturday) and so far, all _seems_ to be ok (or even good). I made sure to check that my Adobe stuff, Mozilla Firefox and Eudora all work as expected -- and they do (at least right now). More news as it happens . . .
Win 10 is okay in most respects, but some software won't run as expected. I used for instance WSftp, a nice ftp software, but it will not work properly unless updated. That said, I am in the same situation as you and curses each day Microsoft for their bossy approach to the Win10 option!