If you were stupid like me and maxed Vengeance, and are obnoxiously rich as well, I'd suggest socketing it with Vex, as you'll REALLY need that mana leech. 9% mana leech with my Nord's and I still have trouble leeching enough mana. I could probably get more with some gloves and that Orphan's Call belt, but then I'd be giving up 67% MF. (I made an MF Avenger and I'm starting to regret it --; )
Although I suppose you could socket it with Shael if you're having problems hitting a breakpoint or something.
i use gimmershred and sometimes bstar but i think i'm gonna transfer baranars to my zealot as gimmer do more damage and as i'm always in party there is always someone with fanaticism with me :]
socket options for bstar shouldnt be used for ml..just use tals mask or gaze if you need leech..
shael is the way to go..could as well be rainbow facet