Datahand (Score 1)

If you have the money and don't mind a bit of a learning curve, datahand is definitely the way to go. Although, I wouldn't buy a new one myself at the current price. But you can find used ones on ebay occasionally, that go for about half of what a new one costs. Which is admittedly still a pretty big chunk of change for a keyboard. But they are much, much, much easier on your hands.

Also, if you want to geek out on it, you can check out my alternative firmware - http://github.com/JesusFreke/DHFirm