I will always have a soft spot for the Unicomp line for carrying forward the old Model M legacy. For odd ducks in the truly commercial space, the layout of the TypeMatrix can't be beat!
I was also thinking old Thinkpad keyboards, and Dell membraine keyboards. Those were both widespread enough that nearly everyone back then had used them, and some of us still remember them lol
Yup, best keyboard I've ever used. They made slightly different versions over the years that fit my hands as well, but none that lasted the way those do; mine is still fully functional.
I spent way too much money building mechanical keyboards, and I could never get to like the feel. So now I am using non-technicals. Guess I am just weird.
My main gripe with them is that they do not offer to pair multiple devices and quickly switch between them. They do however feel great and I've found nothing that comes close in terms of reliability and typing experience. I settled for a Logitech keyboard for now and it's just fine but I wish there were more premium options available.