I own 1 orginal, 1 mocker, 1 workman and survival. I wear the survival the most often. It has the avantage of all the others and is the one I wear most often ( although the workman is by far a heavier fabric). The back pockets could be deeper/longer but other wise it is my favorite. It is the most expensive of the four. My friend, who has been wearing UK's a lot longer than I, favors his workman the most with his original second. Don't get me wrong, I love all four for different reasons. The survival has so many pockets I sometimes loose track of wear I put stuff.