You think the recoils? I think I would prefer the extra launch at the sacrifice of 4 to 5 yards. The pxi 5.5 would be my choice.
I am not sure if this is the correct approach, but it's what makes me happy, as a general rule I never give up distance. What's not listed there is the flex of the Recoils. Part of me feels like a 90+ mph 6 iron is a meaty enough swing to over power 5.5s. But that is just a guess I am making after looking at one picture on the internet.