funny thing is, quite a few of the keyboards mentioned here use exactly the same keyframes which are made by the Italian company Fatar.
The only difference is the way the software is set up, Roland will respond differently to say a Ketron as the velocity curves are set by the keyboard manufacturer, not Fatar. They also make keyboards for Hammond and Korg.
A few of the current frames or on their website (but not all):
http://www.fatar.com/Pages/Intro_production.htm TWD
[This message has been edited by Tonewheeldude (edited 02-02-2010).]