Buy a convertable and everyone is happy
I have just bought a Dell XPS 12 laptop / ultrabook / tablet, call it what you will, my wife calls it a 'fliptop' which I think is an excellent name!! It can be used either as a touch screen laptop, or with the flip of the screen a tablet. It is fantastic!! It does everythign an ultrabook does (with 4GB memory, 128 GB SSD, i5 processor, full HD (1920 x 1080) and Windows 8 pro), whilst having the convenience of a tablet. Expensive, yes, but it covers a miriad of devices in one package.