Hello to Texas,
I'm not sure if you've seen this, but details of Stroft are available here.
WAKU GmbH - STROFT Fishing Lines
The one I've used is the GTM version. The ABR type is available also, but I've not used it. GTM gives a good balance between diameter, strength and 'impact resistance' which I've not found in the fluorocarbons and other 'modern miracle material' lines I've tried.
It's not scientific, but I feel as though I've found a material I can trust for leaders which does the job I want it to.
Good luck, I hope it takes off.