I made a late season switch to the MC irons with KBS stiff shaft after playing with an old set of 200s all season. What a difference! I gained a club distance off each iron. These are exceptionally well-balanced irons and stiff shafts for better control. The PW, 9, and 8 irons are forged for great feel and the cavity on 7+ really seems to jump the ball off the face without loss of control. The faces seem to be somewhat sensitive to banging around in the bag, but I otherwise LOVE my new set.