deskthority

This is a very old thread, but I figured I'd add a data-point for foam and foil. I have a KB5151 that chatters (multiple of the same key output with one press) quite badly. It does this with most, though not all, switches.

And then a few of them just don't register every time, notably the shift ...

Ellipse, you may have seen them already, but there look to be some workable options available if you search for "faucet handle pullers".