Im a huge fan of my Matrix Ozik Program F15 85S shafts on my irons. Granted they are hybrid shafts I installed on my 6-GW, but they still work pretty darn well.

The issue I have is these are older shafts and sold brand that no longer makes the Program series of shafts. To my understanding, these have a very linear EI profile, allowing for the profile to match almost any way you cut them across the set. Should I need to replace them and cant find a suitable Matrix set anymore, which shafts would you recommend that fit the feel and load to yalls knowledge?