The Last Word. It sits at 307, cuz I don't want to infuse any other guns into it (and I don't have anything above 310/312). I've used it since the first month, when I got my hands on it. I practiced hip firing regular hand cannons in anticipation of it.
NL Shadow with reactive reload and crowd control. In pve it is basically equal to having an lmg for a primary for the most part. In pvp you better hope you're not near me after I've gotten a kill.