I appreciate that this is a difficult question to answer categoricall but how stiff , in the big stiff scheme of things, is the True Temper XP95 S300 ???
In theory, as stiff as any other S300 shaft. It might not feel as stiff as an S300 Dynamic Gold because of the weight, but it should be the same.
I tried them when I bought my current irons and they made it to the shortlist of 2. KBS Tour 90 won but I could happily play with either.
If it helps, my ss with 7i is around 86 and driver around 103.