M36 in my pocket everyday everywhere I go. I like the ability to use SA if I need to, have shot grouse and rabbits and such with it as it was the gun I had at the time. Mines steel but I don't think it makes a ton of difference in a gun of this size.

As for durability, Elmer Keith was given one of the first chief special airweights off the line back in the 50's for R&D. He kept it a year and put thousands of 38/44 hand loads through it with no undue effects, those loads would be in the neighborhood of +p++ in today's world. I've shot my M36 a bunch over the years with no apparent looseness or broken parts.