I had been married to the duo-lock, safety-pin style snap (left) forever. They work fine, no doubt, but I've had my fair share warp, bend, and break during a fight. Then I graduated to the Breakaway snap (center), which doesn't open like a duo-lock, but allows you to slide the lure on like you would a key on a keyring. They worked well, but had a tendency to foul on the cast. Sometimes lures would slide up and jam between the overlapping ends of the Breakaway, and that's no good, either. But they were much stronger than duo-locks.