I personally like the speed bump and spec bump series, they are going to be about the same money as the blur family, but they will have a stronger and safer locking system. The "bump" family has the stud lock. this can hold a significant amount of weight and pressure that a liner lock can't handle, not to mention when working the knife side to side you won't have to worry about nudging the liner to the side and have an accident. The stud lock is out of the way of your fingers and won't be affected by your grip. The stud lock is also ambidextrous. I know we can all work our way around a liner lock, but the stud lock is actually opened and closed the same way with either hand. The speed bump is going to have a 13C26 blade which has about a 59-61 RC which is pretty darn good for it not being considered a premium steel. The spec bump however is going to have your S30V steel which is great and looks really cool seeing as how it is all black and has G-10 scales. I do like the blur family, but if you want a good work knife and are worried about the lock slipping go for the stud lock, the bump family is the same price as the blurs, but with, in my opinion, a better all around locking system. Let me know if this helps, J.