I currently have 5 computers running Windows 10 and another 6 still running Windows 7. It depends on the tools and my needs which of the computers have been upgraded. A few of my tools still can support or run on Windows 10.
Currently, I am using Windows 8.1. I am happy with its performance. Thinking about switching to windows 10.
Since my first computer i have used one a few operating systems. on my first computer i had windows xp, it was a very long time ago and i was using it until few years ago when i bought a new computer, than i changed the windows xp and i upgraded to windows 7. Few months ago i bought a new laptop and i tried windows 10 for the first time and it runs perfectly. So, for now i am using windows 7 and windows 10 and i am satisfied from both of them.
On my laptop i use win 7, on my desktop Windows 10. So far i think win 10 is the best windows so far, exept some useless options(for me personally).
still on windows 7 ultimate maybe the most stable OS of windows so far. tried windows 10 but switched back to windows 7 yes correct. . many useless options and it is really optimized for touchscreen ones. ow . ..long live windows 7!!
I use Linux at work and Windows at home ! Both are good. For features and ease of use, obviously Windows is good. But for security or other professional features, Linux and Mac are good.
I don't understand what is the use of 'Cortana' in Windows 10 (I use in Laptop), when it always needs a click for getting 'Active'. It should be like Apple SIRI or Android's OK GOOGLE.