I preferred Peerless chain myself. I liked the double-lock actuator and they were smooth. Early S&W's also had the pin double-lock actuator but went to the sliding actuator. I also carried two sets and more in my vehicle, and had them fail on suspects. The one I remember was back in the woods after a suspect fled on foot. I always checked for tightness and to insure the single bar was locked so I barely missed a beat applying the second set. Chain gave me flexibility when ground cuffing and we always were dealing with the "johnson wool jacket" guys...loggers and such with multiple layers of outer clothing. I was a DT Instructor for many years and always thought the chain were the best overall, for our use.

I once taught a group of instructors by having them handcuff their partner on the bottom of a swimming pool (with water). I held the partner down with my foot. You'd better know your stuff to do that.