Thinking it’s time to move to graphite iron shafts. Would like your take on a few options. Quick note on me/my game.  About to turn 70.  Still hit it decent. Have been playing the TS3 with DG 105 R for the last couple years. 7 iron swing speed 73-75 with this setup.
Testing graphite (65-75/80g) have seen an uptick in speed to 78 ish on average.  Typical ball flight is mid, and would like a tick more height vs lower. Lastly thinking of TS4 9/P/G in new setup.
Thoughts on the Rapport R flex vs MPF R flex as well as the Mitsubishi C6. Trying a couple of the Aldila shafts as well.

Lastly, have you done enough testing on all the C6 shafts in order to incorporate them into the shaft MPF database?  Didn’t notice any of them.  That said, LOVE the shaft database!! Huge help.

Shof