The TP bonus dagger is a huge boost to rudras. It also makes it a functional WS without SATA. It will still be under Exenerator/Evis by a smidge, but 1-2 hits of aftermath close that gap.
The ability to use a non-gimpy rudras 24/7 is why the TP bonus dagger wins. Keeping up aftermath 100% of the time while boosting your WS damage is why TP bonus dagger is nice.
I replaced it with Coruscanti offhand because i like the electric spark and its uber rare for showing off. I miss my TP bonus 100....but then i get mesmerized by the spawkly dagger and forget that my rudras are sucking.