I tried to use Microsoft’s Natural Ergonomic Keyboard 4000 for a while, and it was indeed comfortable. However, the keys were squishy, and the unit itself made it seem like I had a black-painted Bantha-II cargo skiff on my desk.
The brand-new Matias Ergo Pro will fix both of those problems.
Ergo keyboards split the keys into two sections, and the Ergo Pro does this literally, coming in two separate pieces. It also has legs so you can tent the two sections (make them higher at the center) and add negative tilt, both of which let you use them with your hands in a more natural position.
And of course you get those amazing Alps-style clicky keys.
The “navigation cluster” has also been rethought. Instead of leaving the arrow, page up/down and other nav keys in place, making the right side too big, or moving the keys into yet another crazy new spot, the Ergo Pro just shifts the entire block down beside the arrow keys. Result: almost no relearning time, and a compact layout.
It’s not all good though: there are dedicated copy/cut/paste keys (a waste of keys) and yet you have to press the fn button to use the media keys.
Still, I want one, and mostly becasue it looks kinda awesome. Available August for $200.