Tha Rev is real rev_olutonary ..
Tha nicest nd friendliest kite i ever flown, tryed tha 15, 11 nd 9 ..
I would say a 13/9 set for the heavy ones, nd 11/7 set for the smaller guys or woman ..
My advice, Pleace ! Try them ..
Lots of respect for Slingi R&D.