I have 3dx hybrid and 6dx with tungsten inserts, I’ve played the 3dx hybrids and like them, assuming the 6dx is a later model is it a better iron. Can you give an opinion on playability between the two irons, the 3dx has graphite shafts Nickent 201. I’m putting Srixon regular graphite shafts in the 6dx because the uniflex steel shafts are chipped and rusty, should I soft or hard step them to match the Nickent 201’s ?