I got the Invective shotgun. Oh boy is it kickass. I think the best thing about it so far is the fact that it's automatic. I can't wait to fully upgrade it.
I'm not as far as everyone else cause I can only play every other week on my ps4, so I'm still level 15 or so and I'm on Venus, actually quite surprised at how well they designed the map. They did a better job on it than I thought they would