Could you tell us about this? " Australia has spent billions trying to build the best prop driven planes around without realising you can now buy jet engines for much cheaper." I remember that we developed a target drone, successful and jet powered, and the Nomad, a flop which was prop driven. But this didn't fail because of the props but because the tail fell off. These STOL type aircraft are still made with props. We are still buying Hercs for example.
