I have 2 flippers, a Boker Mini Kwaiken Titanium and a Boker Urban Trapper Carbon Fiber. I can sit and play with the Mini Kwaiken all day long, the UT not so much. The Mini Kwaiken snaps open but the UT is a little slow. Out of the box the Urban Trapper would not open more than half way. I asked others about the knife and was told to try lubrication and a couple of drops of oil made a world of difference. It now opens quickly and has a smooth action but doesn't have the snap of the Mini Kwaiken. I think it has something to do with the lightness of the knife and the blade geometry but the Urban Trapper just can't compare with the Mini Kwaiken.