These are my go-to pro: the asymmetric shape locks them neatly into any constriction, and the cutout on the face is incredibly effective at keeping them from slipping out sideways. Place and forget- in many placements I prefer the large sizes (7-12) to small cams because I know that they won't walk out of a crack.
Not great if you're climbing smooth parallel-sized cracks or soft stone- their cutout does nothing in those conditions.
