75 - TBS - Specter of Renewal
74 - TBS - Nectar of Agony
73 - TBS - Fulkitcher Weave
72 - TBS - Lassitude
71 - TBS - Talisman of Persistence
I would honestly just skip the faction grind and wait for the upgrades in SoF for most. Of those the only ones I use now are Lassitude rk2 (which is relatively fast to get if you want to do a little factioning - Id say just get rk1 while doing some Jonas missions) and Nectar of Agony is nice if you root/rot - else skip em!