Desktop with 2 Monitors running Win 8.1, Laptop with Win 8.1 that I use when traveling. Laptop & an old Motion Tablet with XP that I use for keeping Inventory Also Desktop with Windows 10 - which I don't use. IPhone 7X
I'll avoid Windows 10 as long as I can - some programs I have won't run under it and, frankly, I don't feel like learning a new OS unless I have to.