For the past five years I've played the Dynamic Gold x100 and just ordered a new set of iron. before i ordered i got fitted again for the same x100 shaft. when i ordered the irons i got them with the x100 tour issue because I've heard thats a better version of the same shaft. i prefer the heavy weight at 130 grams, and the low flight they produce. does anyone know what the exact differences are between the tour issue and the regular x100?