My favourite keyboard on an Apple laptop was the one that came with the original 2012 retina MacBook Pro 15". The worst by far was the one that shipped with the Late 2016 MBP, the first MBP with the new 'Butterfly' keyboard. The travel was very shallow and it almost felt like typing on an iPad screen. Also the keys were prone to get dust under them causing them to work intermittently. The one that I had had already been to the Apple Store once to remove dust under the keys.
The Magic Keyboard ( draft name IMO) in the M1 Air and Pro, after using it for a week feels much better to type on. Not as good as the 2012 15" Retina MBP, but infinitely better than the late 2016 MBP.
The Air also due to its tapered design makes typing more ergonomically comfortable, particularly on the wrists. This is one advantage the Air has over the M1 Pro.
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