I'm writing this on a windows 8.1 tablet (HP) and I'm also a user of Android Tablet, Ipad, and some others phones/touch interface.
A lot of people in this site and others sites point that windows 8(.1) are too much touch oriented to be good on a desktop, in fact, windows 8(.1) is also not ready to be used on a touch interface. Touch interface is not only a thing about how too choose the app you want to use, but also how to use, write, select, draw, etc. without a mouse and a keyboard, and on these points, none of the windows 8(.1) software are efficace here, they are 10 years late on any others interface, including the old windows CE/mobile interface that I had use for more than 5 years.