I bought an Acer Iconica tablet/laptop from a friend. I got it cheap. It has W8.1 on it. I know it is supposed to be a flop as an OS. But I like it - especially as a tablet OS. Even as a little laptop I like it. No need for a mouse w/the touch screen.
The hardware is a little limited. SSD is tiny 32 Gig. I want to replace it. But I've got fully functioning Office and 8.1 on this.The keyboard is much better than what comes optional for the iPad or Surface.
I think 8.1 may not be optimum for mouse and laptop computing. But I like it as a tablet OS. And w/a touch screen, it's fine for a laptop too.