1 Laptop Windows 10 Enterprise 2 Guest PC Windows 10 Pro 3 Test PC Windows 10 Pro, Windows Education, Windows 8.1 4 My Main PC Windows 8.1 with Media Center 5 PC I build 6yrs ago Windows 7 Ultimate x64, Windows 7 Ultimate x86, Windows 10 Pro 6 Sons Gaming PC Windows 8.1 with Media Center 7 Son 2 PC Windows 8.1 with Media Center 8 Wife's Surface 2 Windows RT Not including Media Center was a killer for us. Until someone comes out with a decent alternative too MCE, I will just play with Windows 10. All are Clean Installs
This privacy thing concerns me too. I am thinking to go back to W7 for a while and waiting for more tests and results on what does W10 actually send to MS.
I installed win 10 ent on 1 laptop as testing. didn't upgrade any others yet as it's too soon to decide.
Using Windows 10 on my laptop, tablets and main PC since the roll out of 10240 on 7/15, my "Home Server or Media Center" still running Windows 8.1 x64 MCE and will be using it for a long time. First time since Windows 7 release in 2009 that I install a new version of Windows on most of my system since day 1. I always skip every other release like Vista and Windows 8 (8.1 is more like 10 anyways)
All my machines are upgraded to Windows 10 and I'm very happy with it. The only exception is my work laptop with Windows 8 (too many applications installed and I have to simulate with VM if all working fine before upgrade) and a Asrock Visio3D used for streaming NAS content to my TV with KODI (I believe it's not necessary to upgrade it from 8.1 to 10).
I Quad boot 7,Xp,8.1,Vista on one HD and 10, OSX, Linux, Aros on another. I'm using 10 more now I've changed it to the way I want.
StartisBack++ 1.0.1 installed, you can make the icons in the taskbar larger and have full transparency. I use both start menus.
Question is diffuse. I use Win 10 for checks in disconnected VMs but wouldn't dare to install on my production system at this point. This is a D.O.A. so far .
Windows 10 about 80% - Windows 7 20% (Thank you Acronis True Image). Still tweaking it, turned off telemetry, removed OneDrive. If I can convince myself I have it to the point that it is no more revealing my data/activities than W7, will make it exclusive.
I'm still on 7. Windows 10 is so ugly, that I will stay on 7 as long as the new hardware I will buy in the next few years is still supported by 7.