After happening on this site last year, I discovered the wonders of mechanical keyboards and purchased a Filco with Cherry Browns. I couple of months ago, I learned about buckling spring switches and that they were the same as the original IBM keyboards that I used to love, so I purchased a Unicomp, which is the best keyboard to type on I've experienced.
Unfortunately, now I need to gripe to people who will actually understand my problem and empathize. A couple of weeks after getting the Unicomp, my finger joints started to hurt. I guess 25 years of typing 10 hours per day is taking its toll. I've switched back to the Filco, with its lighter actuation force and my fingers are feeling much better, but it still sucks to "know what I'm missing."
I'm not really looking for advice, and the Filco is truly an awesome keyboard, but thanks for listening...
Mike