I agree, the CRK's have never been fast opening knives for me either. But some dudes can flip em open faster than a SB! I just cant. ..matter of fact I've never been able to open a umnumzaan at all! I think the CRKs are still a superior knife though, just a different animal. I think a CRK is going to last longer in the long run due to a few problems that exists with the Shiro's, namely the bearings and lockbar insert on some of the model's. Some of the Shiro's have a steel LB insert that is lower than the titanium bar there screwed into. Eventually the LB interface will run out of travel before it hits the titanium bar. Ill try to find a picture but its one thing to look for when buying a Shiro second hand.