The material you refered to last is what I often refer to as D12 line. I think D12 is a brand or product name however.

Personally I don't think the breaking strength is that important, but rather its shock resistance and degradation resistance. The dyneema line we have overhere has a rugged outer mantle that seems to keep the line in good condition. I think this mantle is plain polyester. However these line have a good amount of core fibres which is dyneema/spectra. I think the lines was made by Marlow.

Wouter