I use a Datahand keyboard. It's the best thing that's happened to my fingers and wrists since... It's the best thing that has ever happened to my fingers and wrists. I see a lot of parallels between the Datahand and pure functional programming (lol). They both take lots of commitment. They change the entire way you think about their domain, but what they offer in return is a big improvement in experience and productivity. I have found that I really love programming in Haskell, and I really love typing on my Datahand. The combination is like a drug.
Unfortunately the company that produces the Datahand went out of business years ago due to shady dealings and mismanagement. I got the inside scoop from one of Datahand's ex-excutives, but that's a different story all together. I realized that if anything were to happen to even one key on my keyboard I'd be up poop creek trying to find a replacement. No other keyboard comes close to the Datahand with the effortless, clicky waves my hands perform in order to make characters appear on the screen. I have a Happy Hacking Pro 2 (which I keep close to my heart) and previously a blank Das Keyboard. Neither keyboard comes close. I would have procured a Kinesis Advantage if I hadn't had an oppurtunity to skip that level entirely and warp straight to the Datahand. I'd love to hear about the comparison between the two from someone who owns both but the Datahand is becoming exceedingly rare, making that situation rather uncommon.
Something has to be done - the alternate future that never was (in which er'body typing well) must live again. Now is the time. The 90's are back and people are finally ready to revisit odd looking hardware (as well as clunky boots, trench coats, dreadlocks and AI).
Some other folks agree with me and have made some really great strides toward recreating the Datahand. I'd love to get in a group buy of that project if it ever comes to fruition. In the meantime I've bought a 3d printer and started designing my own take on the old Datahand with a few twists. I can't wait to show you. Here's a picture of my desktop real quick:
Pictured here are three prototype magnetic switches, some refuse, tools, a teensy++ (my board of choice) and a small circuit involving a unipolar hall effect switch.
This is going to be a very fun project.