I have an aluminum frame S&W 442, 38 Special, non +P, and have owned it for over 10 years, haven't shot it a lot and it's never been used with hot ammo, just mild stuff. Still like new. I think if you really intend to shoot the gun a lot, or want to use hot ammo, the high-end scandium/titanium guns might be the way to go. But by the same token, my 442 has a steel cylinder and barrel, and I believe that steel is stronger than any titanium alloy. I basically see all of these ultra-lights as being in the category of "carry lots, shoot seldom." If I want a gun to put a lot of rounds through, I go with an all steel version.