I know there are several OEM’s that uses urethane or some type of fillers in hollow head irons to enhance feel to Quiet vibrations etc some invest hundreds of thousands of dollars and hours to make up there secret sauce to make different urethane materials softer iam wondering even when they do find softer more Resilient material can you tell the difference from one material to the next or one company to the next company especially in cased in an iron head forged or cast is there a performance, feel, distance difference all in attempt to get that soft solid butter feel you get from a forged iron?