When I was playing steel, I LOVED Nippon iron shafts. Not sure of the model, but they were stock in Cobra irons in the 90's, early 2000's. More recently, I loved the PING AWT (Nippon). Graphite wood shaft fav is UST Mamiya MP5.
Graphite iron favs are Matrix Ozik Red Tie Q65 and the blue MCS iron shaft.