Always carrying the Caly 3.5. However, as I get older and the hands that I have enjoyed working with for 75 years have arthritis in the thumb joints, I will, sometimes, slip in my Kershaw assisted opening Leek (I'm sorry Sal). I understand that assisted opening may have some legal problems for a manufacturer but it is very handy. The 10 favorite Spyderco thread has me looking again at the Southard flipper... so I ordered one. Maybe I can retire the Leek. But I will never desert the Caly 3.5.......perfection!