> less jets and more turbine aircraft Assuming you mean turbofan vs. turboprop here, since both of these are turbine-driven. In either case, my understanding

> less jets and more turbine aircraft Assuming you mean turbofan vs. turboprop here, since both of these are turbine-driven. In either case, my understanding is that turboprops don't present a substantial gain in efficiency, as turbofans allow for higher and faster cruising altitude, which reduces drag on the airframe.