There are way too many variables involved to answer the question here with anything other than ones opinion, PERIOD!!!

It is not just the material, a few of the other variables are,
Fin Count, number of rows, are they staggered or not, are the fins louvered, thickness of the fins, how many fins per inch, how are the fins attached to the tubes, diameter of tubes, thickness of the tube walls, spacing between the tubes and on it goes.