Does anyone have any experience with these shafts? When I turned 70 I switched from kbs tour shafts to aerotech i80 graphite shafts. I was happy with the performance of the i 80 shafts, but they play stiff to flex and can be a bit harsh. Also, the dispersion was never quite as good as with the kbs shafts. About a month ago, I bought a used set of titleist t150 irons with the Zelos 7 shafts. Not much difference is distance, the feel is better and the dispersion is very good. They do require a smooth swing and slower tempo. I was wondering if anyone else has tried them.