ode I'm not sure what the iron shafts are like, but I love my Irod hybrid/FWs. I'm tempted to give the iron shafts a go, but they may be a bit light for me. Going from 115 g Project X to these would be a drastic change, but I'm finding that, as I age, even the 115 g shaft is beginning to feel a bit on the heavy side. I know the profile would be entirely different, too, but as I say, I've had tremendous luck with them in my FWs.