olkev

For the past several years I have used a driver with an EI-70 stiff shaft. I like the weight and it has worked well for me. I am reshafting a new driver. I see that the EI-70 has its problems. Old technology, inconsistent in terms of flex, frequency etc. So, I am looking for something that has similar characteristics and I have narrowed it down to the Graphite Design YS-7 shaft in the S/X flex or the Fujikura Vista Pro 80, stiff flex. I've seen shaft specs. Who can compare and contrast the shafts listed in terms of playability, feel, etc? THANKS IN ADVANCE!