I've had dozens of keyboards in my PC life, so far. The earliest examples were Chicony clicky-mechanical boards in the late nineteen-eighties. Those were pretty cool (and they're very much NLA).
I've had innumerable membrane keyboards. Some were more useful than others. I had a very long and pleasant run of membrane boards made by NMB, which were good while they lasted.
Over the past 5 years or so, I've been mostly using boards with Cherry MX Blue switches -- assembled by whomever. Those worked fine, too.
And lately, in the past month or two, I replaced the one at home with a keyboard that uses Hall effect sensors for each key in place of any kind of conventional electrical switch. It's been fine; in fact, it's been quite lovely so far. It's a joy to type with.
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I haven't named any keyboard makers here except for 1980s-era Chicony and PS/2 era NMB. Some of my keyboards have been good, some have been great, and some others have been trash.
That's my background.
What's yours?
What makes ZSA deserve "so much love"? Can you elaborate?