Yep been working with Win 10 for 2 days now. I did upgrade install so did not use install media and I selected the option to keep my own personal files.
I lost all my programs (and drivers) but after installing chrome, teamspeak and few drivers I was about good to go.
I want to emphasize that I've had 0 problems so far (maybe I'm lucky guinea pig). You might want to check the
privacy settings, they're horrible. By default you basically agree to everything.
I had steam on different drive and I just launched steam.exe and set from the settings to run it again every time windows started and everything worked as should. All games started right away and as I said - I even got small fps boost. And OS starts even faster than 7.
If you do have keyboard / mouse settings you do want to keep and they are on your C drive, make sure to backup them. The installation was a bit unclear what is removed.
Edge seems quite fast and cool browser and with the ad-block workaround I might give it a better chance but so far I just thought that I'm perfectly satisfied with Chrome, so why would I change it.
Maybe one thing to mention for me atleast was that I had my Win 7 with eng. installation. By default 10 installed based on my location (?) since the upgrade changed it to Finnish. But it's easy to change it back to English afterwards.