I really loved my Tenacious (first spyderco) years ago, i carried and used it, and after a year the liner lock touched the opposite liner, resulting in blade play

My favorite is the PM2, did'nt like the Manix, carried to wide and the weight difference.
PM3 is not for me i think, when i carry my Military (belt sheath) for a while and then hold my PM2 again, it feels tiny in hand