ok, i now have tried the 65' and 66' z7. i have enjoyed skiing both. i'm 160# and 34 mph skier. the 65' worked great with boots in center (29.0). did not like 1 hole back. the 66' worked great with 1 hole back (29.25), not great with boots in center (29.75). i agree with the comment that this ski is sensitive to binding/fin changes. i was able to tell on both skis if i was in the 'sweet' spot depending on the binding placement. the ski wants to initiate the turn and finish the turn in the sweet spot.  otherwise your kind of pushing the ski around.  i'm still playing with the fin but today .765dft, 6.830, and 2.500 felt good. wing @ 7 deg. this was the 66'.  keithÂÂ