Okay Evil4N, you like it the hard way
As the person who has to endure installing this crap on many systems and troubleshoot it, I had to try both, clean install worked EVERY time.
@Fossil, do yourself a favor and read the "Microsoft’s 12,000-word, 45-page terms of use agreement"
There are at least 13 issues that you need to address immediately and some "opt out" are only currently possible with third party help.
If you use pirated games or anything as I have for as long as I remember, MS can block it (this was changed and I haven't read about it)
If you like your main home OS to be more like your Smart Phone (the added "Start Menu" and all on the bottom are an APP, just like your phone's app) then go ahead.
Use Windows 8.1 drivers first (if exists), then 8 before going all the way back to win 7 drivers.
When I was testing early releases of 10, the free upgrade was meant for 8.1 only, and now, they are PUSHING it to Win 7 license holders (over 500 million sold and MANY none legit)
This is good enough reason to "approach with caution" ;)
To all: For me to not be able to access the advanced "settings" easily and once there, change preferences, is unacceptable.
I was happy to see most command line calls are still there, some have changed names but Windows update UI has been removed, used to be "wuapp" but loads of others are still available.
This is important because the "desktop/ Start Menu" app, does break often in Windows 10 on some systems and I didn't just try this on my own system, so far the numbers of Win 10 install on new/ old systems by me has reached 3 digits ;)
YOu guys making me late to get to Toronto .... bastards ....