I have been using KeyCue for three years on Tiger and Leopard with no problems and the latest version allows me to see all my application and QuicKeys shortcuts at the same time, which is brilliant. QuicKeys became an indispensable utility for me back in the Classic OS days and remains so now. KeyCue is the only practical way to quickly see what shortcuts are available in any given context across the application, system and QuicKeys domains simultaneously, in an attractive and easy way - well worth the fee for me.