As I have stated on other dussions I am not as good as some are here at putting together a opinion or tech stuff but I being a much older golfer who over the years was always looking for that next great irons set wedge driver etc! I have (I think term is club hoe) anyhow a few years ago went to titleist fitter and have never look back but as I have gotten older maybe not wiser thu I decided to get fitt for new irons we took into fact distance I can hit each wood irons I he and distance and gap in edges and what I really hit and from what distances here are the results driver three wood within 5 - 7 yards of each other but three wood center driver not so much as three wood .irons ap1714 6-gap Graf. Shafts.seven iron 128-133 on avg.had three wedges if you count pw we changed irons after three test sessions from ap1 to ap2 6-pw no gap sandwedge from 56to 53 .shafts in new irons are Nippon 850 r flex. I now have three wood seven wood 27 degree hybrid .im more constant more fun than ever irons are more dialed in for distance and narrower shot shape distances slight increase sometimes if you enjoy golf as much as I do you change to gain!