I have failed so many leadership/pinning tests when my Raiders explode on a 9, that I have been takin the Sybarite.
The weapon choice for my Hekatrix is more of an experiment. I've done the venom blade, agonizer, and even just a CCW. So far the agonizer is most consistant, but more expensive. I haven't tried the Power Lance, the axe negates her advantage, and the Maul would have its perks but unless i'm getting into it with some Tau or some other Xeno i don't see myself using it