RNG plays tricks with your sense of reality. I farmed FOX super fast and felt like I was getting great drop rates. Then started on Aayla and haven't had nearly the luck. I have to keep reminding myself that FOX is an 8 energy node and that I was simply running more sims.
All that aside, Death Trooper was my worst. Feel like I was farming him forever across 2 different "double drop" events. On the plus side, during one of those double drop events I got an omega +1!!! Jackpot.