THIS IS A HARD IRON TO BEAT! I WAS FIT LAST YEAR WITH THE CFS SHAFTS. PLAYED THEM FOR A COUPLE MONTHS THEN WENT TO THE PING FACTORY TO GET RE-FIT. WENT TO DG S-400 AND FOUND THE ADDED WEIGHT A GREAT FIND. IT TOOK ONLY A COUPLE ROUNDS AND I MELTED RIGHT INTO THEM. CFS WAS VERY GOOD BUT A LITTLE LIGHT A LOOSE FOR ME. A GREAT IRON AND COMPARABLE TO ANY TOP SHELF BUILDER ON THE MARKET. I PLAYED I10 FOR 3 YEARS AND FOUND THE JUMP TO I20 VERY SMOOTH.