Which is the better choice in the long run?
I'd say Collector. Encounter with Nebula in Episode 2 is more exciting that way. Otherwise, it doesn't really matter.
As @Pipas said, Collector. Way better fight in ep2 imo, rather than some flying in space.
I prefer the collector. Provides more intrigue with being on the wrong side of the law and you actually get the money first-hand from the deal! No legal shenanigans required as it is on the NC path. There's also plenty of trinkets being used in the EP2 fight, and it's a lot more close-up and action packed.