I prefer Windows 7 Ultimate. Started in a new job recently, and there i have Windows 10. My experience so far tell me that i'll stick with Win 7 for a bit longer at my home computer.
I use Windows 10 for workstations and desktop and only Linux, Centos 7/8, but in Cloudlinux flavor, for remote and hosting servers. I used to run Windows Server remotely and Ubuntu on my desktops, but it works out better for me with them reversed strangely.