I had one of the 11oz 340's. Between the lock, flame-cutting and bullet pull issues, and the ferocious recoil I decided it was too much trouble--if I wanted ammo sensitivity etc I'd carry an autoloader. It was very easy to carry, but the the 642 I replaced it with isn't bad and a whole lot less finicky and more pleasant to shoot, no lock either. 442's and 642's can be had new under $400. Considering all those factors there's no way I'd go with the 340 over the 642.