I've a question about the flex rating. I would like to try the OTi 85 but don't know if I should take R- or S-Flex. My driver SS is 100 - 105mph after a few warm up swings; on a bad day it goes down to 97mph. So I should take S-Flex. But I experienced with other shafts (recoil proto 95, steelfiber i80, standard Mizuno / Fuji Orochi in 825pro) that the R-Flex model is stiff enough. At the same time I play some S-Flex shafts (recoil 670, FST Pro115) and they don't feel boardy or harsh by any means. The very light Zelos 7 in R-Flex feels a little bit too whippy but not like a 850gh which is too soft for my feelings.
I don't have the opportunity to get some demo clubs with both flexes so I have to buy my own demo shaft / club. Do you think the R-Flex would be a good choice or is the bend profile too weak and I should get the S-Flex which would be the flex rating for my driver SS?
Thanks!