I dunno, I find the iOS keyboard to be higher in my list of annoyances. While typing, there's only one possible word that can be the autocomplete e term? And I have to look up, stop typing, and hit that tiny "x" if I want to override it? (I've overridden the autocomplete for "it's" and its so many times that it's apparently given up trying to autocorrect for that)

And who thought that shaking the device to Undo a simple typo (which the requires you to stop convulsing so that you can press OK or Cancel) was at all natural? I've yet to meet someone who intuitively figured out that feature. I had my iPad for a year before I realized it was my accidental sudden movement while typing that was triggering the Undo.

In terms of total annoyance accumulated in day to day use, I'd say the iOS keyboard is by far the dumbest UI pattern