Just a couple of general comments...
8mm beeline has a 6mm vectran core, so does HRC but the HRC core is noticeably stiffer.
Technora is kind of soft and flexible. The Tech cord has a urethane coating that makes it stiffer.
If you splice it and whiplock the jacket tightly, HRC is pretty stiff, almost too stiff for a split tail.
I've been an HRC fan since it came out but a recent experience with a rope that was utterly coated with fresh pine pitch convinced me to start using icetail. So far, I'm liking it better than HRC on Poison Ivy. I still prefer HRC for Velocity though.