727 pan. Cast or steel????

Hey everyone. Chasing leaks out of my trans. Pretty sure I got the classic gasket issiue. Leaks from the front of pan and always a couple drips on two bolt heads in the front. All ready gone to dealer and got new style pan gasket but didn't stop the leak. My old pan looked ok but next move is to change it out. What are people using??? Cast aluminum better than a new stamped steel one? Only really concern is stopping the leak.