Cosmo or ripper for hbm and what tallente and crest are best for ripper
Both need Sacred Light and revitalize 5+ for PvP or Revive for other modes. Eventually you can give Stone Skin insignia instead, and it should be ok.
I'm not sure because I don't have cosmo, and ripper is sitting at a lazy 165, but I would guess that cosmo with empower would be better for HBM, to answer your question. Perhaps not such a high level empower as to permastun the boss at the end.