I bought my first and only tablet, an iPad, two years back. I havent't much used it since then. I bet it would be great for reading and watching videos, but the moment I want to type something, I just become needlessly irritated and switch back to my MacBook Pro.
It's not just typing on a touch screen; that's awful, but then I bought a keyboard. But using the Dvorak layout, Scandinavian letters and Japanese input in my daily life makes iPad just not cut it. It's not a flexible device like a PC is. I still haven't been able to type the way I'd want to.