My carebear soul (which likes the peaceful life) likes the fact that courier missions are pretty safe. Take A from B to C; get paid (with a bonus if you don't *rse around); possibly pick up a mission part of the way back; fly home; dock. My avaricious brain, always looking out for the possibility of getting blown away, dislikes the fact that they pay peanuts, and that there are rarely mirror-image missions at the other end to make the return trip worthwhile.
On the other hand combat missions pay a lot, but take a long time, and kill yer shipz. (And people are supposed to like nipping in and stealing the objective, but so far, praise the Cosmic All, I haven't had that). My brain likes the reward, my carebear soul whimpers and hides under the blanket till it's all over.
What I need is the sort of agent who's willing to pay combat rates to have their holoreels and tobacco delivered, and whose combat missions pay medium well, and are always against one rat in a noob ship that just happens to be rigged with Faction moduels and tons of salvage.
And I know what people will say :: Come to 0.0 -- everywhere's like that !!.