+ + + Rogue Trader + + +
Honestly, I like Adventure, but I also like trading over the base banditry that's pretty common from what I notice. I tend to run Traders as what the ideal is--mobile beacons of light on the distant frontier, who bring news, treasure, and the Imperium's protection along with them.
Because what it boils down to is that I feel 40K is a depressing enough setting without the protagonists contributing to the ash heap. I don't care if it basically makes things harder because the universe hates nice people, I just want to try running idealists for a change.