Picked up the 160cm at the start of the season after abusing a 156 model for the past 2 seasons, which included 11 days of cat boarding and probably 40 days all on it. Went 156 as I felt my K2 Gyrator 162 was too stiff. I was on the upper end of the weight range on the 156 and was running about 1.5" setback to help in all the waist to nipple deep days we had up in the PNW.
On the 160, Im slightly back of centre to get the same float, without the risk of having the nose sink in. Not as playful of a board, probably due to the larger size (used to pow manual the 156 an entire pow filled run). I've stopped riding all my other boards once I got the Sick Stick as it is such a fun board even out of the pow and on the groomers.
My lead guide last week was on a factory split Sick Stick as well!