Thanks folks!
Ended up going with Swiftkey X, and it's definitely an upgrade to the stock keyboard and also to the unofficial ICS keyboard.
The only three complaints - I wish that I could get rid of the ".com" button, and elongate the shift key. I also wish that I could input an exclamation point from the main screen, rather than having to go into numbers and symbols to do so. Lastly, I wish there were more themes, as I have the white one now, simply because of the rounded edges, rather than everything sort of blending together. But, all in all, a big upgrade.