Holy shit, though, is Windows invasive. It's astounding, actually. It's uber-cloud.
If you do the express install -- which it really, really wants you to do -- you transmit everything to Microsoft. This includes ALL your passwords, your home wi-fi password and access info (!!), your browsing history, your "app" usage (i.e., which programs are on your computer, how you use them, and what you use them for), and your location, of course.
So you can turn all that off if you do the custom install...and that's very easy. But, disabling all this during install is only half the job. If you don't then go into settings to tweak the privacy further then, unbeknownst to you, Microsoft and ALL your apps still have total control of your camera and your microphone. Shocking, really, because you know 90% of this stupid fucking country is just going to blindly install Windows 10 and transmit their entire lives to Microsoft.
The home wi-fi password is a bizarre option. If I turned that on, and, say, RC upgraded to 10, then RC's computer would automatically store all the access info to our wi-fi because we're tied together in social media and elsewhere. This feature, within the first few days, became an exploit. Do it wrong, and have people who know how to exploit it on the other end, and you're basically sharing your house wi-fi with everyone on your FB page.
All that said... It's still worth it. It's cleaner, faster, intuitive. It really is a spiritual return to Windows 7.
In my secret dreams we'll get Windows 10.1 that'll reverse everything back to XP. LOL...