I like the backlocks the best. All of mine these days have that "Boyle dent" to make them safer. I don't care for liner locks because you have to put your finger in the way of the closing blade. However, I've never cut myself with a liner lock, but I can envison it happening. And whatever that lock type is on a Benchmade Gryptillian - that is the only locking mechanism where I have actually cut myself while closing the knife. In a knife store, inspecting the knife. How embarassing. I obviously mishandled the knife, not knowing what I was doing. It was like after a certain point in closing the blade, it somehow pulled out of my grasp and snapped itself the rest of the way closed. Unfortunately, with an errant finger still in the way.