I currently play 710 model AP2 irons (for the last 3 1/2 years). My handicap index is 8.0, I'm 64 years old and play 4 - 5 x/week. Last year switched out the Dynamic Gold R300 shafts to Dynalite Gold XP R300 shafts and am happy with the switch. However, I'm wondering if I would see significant performance improvement ( higher 5 and 6 irons, flatter launch short irons) if I upgraded to the 714 model AP2 irons (5-PW,W). Do the technology changes warrant the switch to 714?