Has anyone used the latest SP3 factory restore image? Is it Windows 8.1 or Windows 10? I ask, because things got hosed when I went to preview build 10532 and then back to 10525. Now, I want to do either a restore to Windows 10 if that's the factory image, or a clean Windows 10 install if that's possible. I don't want to go through the hassle of a Windows 8.1 > Windows 10 upgrade if I can avoid it. Been a bit out of touch with this stuff over the last couple of weeks, so I'm not sure what the current best practice is. Thanks!