My favorite setting is ... well... a new set of Ken Smith Burner strings. The nickel type.
All the EQ settings cannot replace a fresh set of strings.
Secondly. A nice sounding cabinet seems to make the tone just pop out in the mix.
I know this is slightly off topic - but since the subject is "tone";
mentioning the basic ingredients wouldn't be too far off topic.
Bass (BMT or BSR) + New Strings (Burners) + Nice cabinet( a good one) = That sparkling Ken Smith Tone.