Edit: I completely forgot about Zen meteor, but seeing as how this is not available for both consoles, I'll just say that it shouldn't apply here. Exotic sniper rifles in PvP seem to be a dubious choice at best, since a legendary typically can do everything they can do equally if not better for the most part. (Blinding and cloaking exotic perks being extremely niche perks at best, NLB being the black sheep among those available of course) That said, of the ones available, which one do you enjoy using the most, either as a legitimate main for your secondary or just for kicks.