I think a 72 would be great on this plane, considering it weighs the same as a os fx 46. Im just flying a saito 56 on mine , and its got plenty thrust to hover. If this thing just had some rudder below the thrusts line it would be a great plane. I still like mine very much. There is no earthly need for .91s and 100s on a four pound plane. This plane has great elevator authority, perhaps the added thrust of the 72 would help throttle blip the rudder around and make up for its weakness in hover. All in all, a great deal for a c-note, that magic is. I just wish they had the elevator pull wires offset, so i could run a joiner wire down and add about half the rudders surface area to the underside of the plane...... have fun with it!!!