Except for the beam spring, I guess I've tried most of the keyboards. I collected 40 keyboards including more than 20 different types.

Some worth mentioning, like the blue alps, white alps, membrane WYSE, membrance Model M, Matias tactile pro, Key Tronic MKI membrane, the red Cherry MX and the one and only IBM Model F XT which I resurrected. Not really a fan of IBM membrance, but I've collected more than I need. Just feels great to bring them alive.

Next I will need 40 fiscal cycles to earn the change to clean them up, which means 4 mil to go.

Count on my index.