I was glad to see Maltron and the Datahand.
I've been using Kinesis contoured keyboards for years. The physical layout is probably among the best. Although their height usually requires the use of a keyboard tray. My chief complaints are that the PS2 version has issues missing key strokes/releases (maybe about 0.1%) and the ESC key is garbage. Also, sometimes the keyboard thinks one of the modifier keys (Shift or Alt) is being held down. And I've had 3 different units, so it's not just a bad one. That I've put up with these quirks for over 10 years is a testament to just how much I like the layout.
I briefly used a foot switch for it. But, once I got out of the habit, I found it difficult to resume using.
I've been meaning to upgrade to the USB-enabled Advantage. It looks like they have the same ESC key, but hopefully the electronics have been improved.
https://www.kinesis-ergo.com/shop/advantage2/
If anyone can recommend something similar, I'm receptive to suggestions. I simply cannot believe Maltrons are
still so expensive. Just as the Kinesis contoured keyboards have always seemed to be around $300, Maltrons have always seemed to be north of $750.
Update: Just noticed the Advantage2 upgraded the function keys (and presumably ESC).
Cherry ML mechanical function keys
Long-time Advantage users will rejoice to learn that we’ve replaced the mushy, rubber function keys with high-performance Cherry ML switches that offer the same low-force and tactile properties of the MX Brown.
I guess it's finally time for me to upgrade.