DM42 early units vs. current?

[Dave Britten]

I've got a DM42 that I bought from the first release batch in 2017, and I've never been in love with the keyboard. "Willing to live with" is probably a better way to describe it. Has anybody used one of these early units, as well as a fairly recent one (i.e. 2020), and can offer a comparison of the keyboard feel and reliability between the two? I'm considering buying a second one, but only if the keyboard quality has improved to at least match the DM41L and other Voyager clones from SM.