I'm guessing you want a great bass, not just the typical suggestions.
So...
Reverend Thundergun
One of the best-kept secrets in the bass world.
SPLIT BRICK
Strong lows and highs, open mids. Like a vintage P bass pickup but with more beef, yet retains clarity. 43 gauge wire, ceramic magnet, 8.5K ohms.
THICK BRICK
Warm and thick with strong mids. Output and punch like an active, but more organic sounding. 42 gauge wire, ceramic magnet, 7K ohms.