Google has really gotten the stock Android keyboard spruced up in recent versions of the OS. Of course, it's still a limited experience lacking in the bells and whistles of some third-party solutions. Speaking of bells and whistles, the new Kii Keyboard has more tweaks and settings than you'll believe.
Kii takes some of the most popular features from the established keyboards. It has swipe input like the Swype keyboard, word prediction like SwitfKey, and a split layout for tablets like you get in several other apps.