I prefer the lockback #72, followed by the slipjoint #73, with the linerlock my least favorite. The slipjoint has such stout springs, that any lock is a little redundant, but the styling of the #72 is better for me, with it's clip vs. drop point blade and the long pulls. It also has the easiest pulls of the three. The linerlock's lock tab is very slightly in the way of a good grip, so it comes in last for me.