The Brix has no USB 2.0 ports and no legacy USB in the bios - So keyboard and mouse were non functional. Presumably the ISO was built pre-USB 3.0 era. So I had to customize a untouched image with USB 3 drivers. Drivers had to be downloaded from Gigabytes website. All to learn that MS update doesn't work with Kaby Lake. Great.
Windows 10 setup was quick & easy.
Running 10 feels like I've lost control over my own OS. It updates when it wants and I have no way of turning it off. It is connected to numerous IPs I have no control over except to painfully block in hosts. Onedrive has no official uninstall option, Windows updates can no longer be postponed with 1607 and burns 15-20 mins productivity when restarting. There are a handful of services I don't need or want that I cannot disable (Wifi password sharing anybody?). It is the exact reason why I wanted to run Windows 7 in the first place.
To me it feels like another forceful tactic to push me to use Windows 10 for which I have no desire. Win 7 is supported till 2020 so don't choose for me but that doesn't matter.