I have both a 2016 and 2017 one. I did not notice any difference in keyboard quality and they both failed after about a year. Keys either stopped picking up input, or would repeat. On one my space bar repeated a lot and just felt wrong.
I won’t be touching the 2018 one until I see reports of people that have had them for over a year. It sounds like based on the new WSJ reporting, the 2018 has problems too though.
