Things will need to be 'relaxed' a whole lot more before I am convinced Win 10 is a good proposition. Tools to 'fix' borked updates fall well short of being satisfactory in my book. No, there needs to be a 100% backtrack on this or MS will not meet its target of Win 10 0n a billion machines by 2018.
While I have 3 machines that are eligible to upgrade to Win 10 Pro, thus allowing an 8 month 'reprieve', I also have two machines that would only qualify for the Home Premium Edition, and these will remain as they are [Win 8.1] because I don't have the patience to be messed about if forced updates eff either of them up. Even so, I'm still not convinced that I should upgrade the 3 Pro machines to Win 10 Pro
I've read there's many under-the-hood improvements in Win 10, but it is the ugliest edition MS has ever produced, and I'm still not certain that I want to mess up 3 stable installs of Win 8.1. I have an old AMD 1150T machine stashed away and still in good working order. I'll likely use it with my spare copy of Win 8 Pro to do an upgrade.