how does the flex on the nvs hold up with other shafts? i heard aldila shafts generally play stiffer than most with the "R" flex being between 90-100 and the S between 100-110. i usually play stiff shafts in my other clubs with a SS of around 98 mph. getting the callaway fusion ft hybrid with the nvs but not sure between the R and S. have any of you been in this situation?