I updated my laptop to Windows 10 last night. I left my desktop alone as it is my heavy lifting machine that handles work and gaming for me. First impressions.
The new hybrid Start button is better, but still not the best as it was in Windows 7 and prior versions, but doable now.
The new Edge browser is not good. It is very fast, but it is so striped down and limited, it is like getting a Ferrari engine and frame, but everything else striped off the car. Thank goodness, you can go back to IE 11 or install Chrome or FireFox.
Cortana, is interesting, but when you do a custom set up and read everything it wants to send about you back to MS, I turned it off. It wants to read everything you type or say, your location and your browsing and programs you run and send it to MS. I don't need MS to know I am addicted to the BP website and play too much MWO!!!
I am still playing with Windows 10 and I will keep it installed on my laptop. I will update this post as I continue to use Win 10.