Thanks for providing this information Viv, it is very enouraging that an affordable tablet can be used for cortex. I am still on XP as it still works and while I use W8.1 I don't like it on a desktop. However the fact that a low-cost device with built in battery back-up can be used is very encouraging. I for one hope W10 improves the user experience without adding bloat etc. If so, and suitable as main controller, it might ween me off XP and into the world of tablet-controller, although a Pi-controller appeals.
Thanks
Jon
PS my current controller is a Dell D600 which I bought second hand and put a new HDD in. It has been running 24-7 for 8 years and has required 1 replacement fan. It will be hard to beat for reliability!