Strange to hear how much defense of poor plastic actions we see on this forum, but when you finally get the same people talking about some of the classic keys, their enthusiasm overcomes their natural defenses of their chosen arranger...

Playing a Rhodes was ALL about the action, as was a Wurli, a B3, a Clavinet, a Pianet, and most of the electro-mechanical keyboards of the day. What you COULD play, and HOW you could play it was a function of the action itself to quite a large degree. Each action lent itself to certain styles of playing, and to go beyond those limitations often took some considerable tinkering with the action and mechanical components to achieve. There was no 'master' keyboards back then, each sound required the adjustment of YOUR playing to it, and that is what beget the sound...

Nowadays, we give so little credit to the action itself for generating the 'sound', but I believe it still goes a long way to determining your performance. Simply sit at one of these old monsters, and play it for a few minutes, and you will find yourself playing things you never would have played on a plastic, spongy keyboard with fewer notes than these things have.

Function follows form...