Netbook went fine. Ran the upgrader app, let it download 10 and directly apply it. I still don't see much real compelling about it.
Did my backup laptop. Video not supported. Win 7 worked fine.
Note this folks: Click Start, settings, update and security, REcovery. There's an option here to roll back to Windows 7
"Go back to Windows 7. This option is only available for a moth after you upgrade to Windows 10." I'll be ablt to tell you in a couple hours how well it works.
--edit to add--
wow. less than 15 minutes later, the roll off from 10 back to 7 is done.