I think windows 10 is heading in the right direction after the abomination of win 8/8.1, but they should have waited until it was ready before releasing.
Using it on surface pro 3 and battery life is half that of win 8.1.
The bundled mail app is useless, mail with images(junkmail) doesn't render properly with images spread everywhere.
Links within email cannot be opened and i've yet to find a way of copying text from within mail.
For some reason it doesn't show/receive all attachments, only the ones it feels like receiving.
Onenote which was quite useful on win 8.1 doesn't work properly if at all.
The on-screen keyboard rarely opens when selecting a text input box and when it does i get a handwriting input window instead of the keyboard which takes another 2 keypresses to get the keyboard up, select another input box and the same happens again
My desktop will be staying on win 7 for at least another 6 months and i'm considering rolling back the surface to win 8.1 before the month deadline expires.
If they can't get it working right on their own hardware from day one then it's not ready!
Steve