I had an Aries nemesis drop pre dlc with firefly. And an nitc post dlc with firefly! It's the only perk I'm interested in. I bought mida from xur a whole back but never used it properly, exotic space is left for IB. However with the speed boosts I'm using it in the corridor run, and if xur has the upgrade again I'll be getting it to 331 to try in the pit too. Speed!