I have an MK1 folder. I love it. I carry it almost every day (in my pack) and so far its been absolute bombproof. I've even used it as a Baton cutting wood for fires. I've owned only one, the same can not be said for all the Buck, Spyderco, and Gerbers that I have chipped, snapped or broke over the years. Since getting the Mk1, there is only one other folder I will carry with me that I like as much, only cause it has a one hand open/close system and a can opener on the end.