I never bother with stainless unless it is the same price, which it isn't. At least in rifles, rust is not really much of an issue IMO. If you get a little spot, I usually just oil it and go on. I try to take proper care of my rifles but if I am out in the rain all day so be it. I am not afraid, lol!

I don't live by salt water. If I did, I would go with stainless. Or if I cared if my guns always looked really good or whatever.