FWIW, my choice for safest lock would be, and is, the Axis Lock, one reason I waited until I was able to collaborate with Benchmade on the RSK Mk1. http://www.equipped.org/pop_up_axis_lock.htm A well done Frame Lock, such as used on the Sebenza, is probably as strong or stronger, but isn't as "safe" since is requires you to put your finger in the path of the blade when closing and can be not fully engaged if opened too slowly. Both SOG and Cold Steel make locks similar in function to the Axis Lock, so my comments would be similar for them. Liner locks have their problems and when they fail, they generally do not do so as you expect, but suddenly. A good quality liner lock is just fine, but there are saferand stronger locks out there and not all liner locks are good. If your Gerber truly has a "brass" liner, I'd be inclined to feel that was not appropriate material. Liner locks should be steel or titanium, or similar high strength materials, in my opinion.