It really depends on the output of the bass used guys.
While I keep the same settings, my Spector Rebop 5 DLX (with very hot output) has a way more overdriven sound than my Squier VM P that is passive.
This means that one's settings won't sound the same in another's case.
That being said, with my Spector I have blend at 10 o'clock, level and gain at 9 so I can have a mild driven sound.
To have the same amount of overdriven sound with my Squier VM P, i have the blend at 3 o'clock, level and gain at 12.
Hope my advice helps
edit: FAT and attack FLAT on both.