Sorry, of course. It does look like CF is the king for decay time. I meant to imply that the double-leg design seemed to greatly impact rigidity, wood or aluminum... And Gitzo does have a twin-leg CF pod available, so I suspect it would be the best of all.Jack,
Just looking at the amplitude this is correct, in the description it is said that these manfrotto's are quite stiff. But the decay time is significantly longer (6.9 and 12 seconds). This is the aluminium which has little internal damping by itself.