Well sir, if I was in Texas, where certain parts of the State do enjoy a bit of humidity every now and then, and if I were a fly fisherman, which typically involves being in or near bodies of water, I would seriously consider placing the stainless model at the top of my list.
But you know you can't go wrong with any of your choices.
Catch as catch can.
A free people ought not only to be armed and disciplined, but they should have sufficient arms and ammunition to maintain a status of independence from any who might attempt to abuse them, which would include their own government." - George Washington, January 8, 1790, First State of the Union Address