An ergonomic keyboard with good tactile feedback would be my holy grail. If someone knows of a good one, please send it my way.
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From the perspective of a programmer using vim, the Advantage2 is mankind's peak achievement in the field of computer keyboards.
Wouldn't something like the moonlander be better?
The Advantage2 keyboard geometry gives you many landmarks, so even if you don't touch-type your hands can find the keys. In other words, even if you have poor keyboard technique (lifting your hands, pecking, etc.) this keyboard is a big win.
Recommend you don't waste time on inferior alternatives like ZSA Moonlander, but maybe that will be your mistake ("learning opportunity") along the way to the peak.