Hey Global fam! I now own all of these pieces - I was gifted most of them lol. I looked at the 15lb balls, and they're all in the same realm of specs & cores:
HBT: S71 Pearl, 2.47 0.041 0.008
HBEP: S74R Pearl 2.54 0.053 0.011
HBR: S70 Hybrid, 2.54 0.048 0.012
FP: S72R Pearl, 2.55 0.048 0.014
If you've thrown any or all of these, how similar did you find them?
Thank you for all the help!