Re: What kind of humbucker best for Bass??
What timbers? What precisely is the "best output"? What style(s) do you play?
Technically, the split coil Fender Precision Bass pickup is a hum-cancelling design. A Jazz Bass Stack is a humbucker. I digress.
From the SD/Basslines range, the Passive Phase II would be nice, especially with the STC-3p pre-amp circuitry. I'd suggest either the SSB-4 or SSB-5 pickup ONLY you haven't even mentioned how many strings your instrument has.