Can I tell you a story that might have some bearing on the matter. Five years ago I bought a Bryant at a reasonable price. With new Spiros it sounded very nice, it was not a large 3/4 and it had endearing qualities that I was attracted to. I fitted an Underwood that had always been my pickup of choice and it sounded Ok in my room, with a Clarus and 12" Wizzy. Until I gigged it. It had no focus or strength of sound. So I went out with a Wizzy 10, then a Realist, then a 10" Shuttle, then a Puma 500, then a Crazy 8, then a Lifeline, then the Underwood and Lifeline mixed.
Then I went up the road to Tom and George Martin and bought a new 3/4 Solo with a Full Circle for an unreasonable price and it sounded great on gigs and attracted a lot of admiration. ButI felt I couldn't abandon the Bryant and did what I should have done from the get-go. I went to a luthier who put in a new sound post some 20mm from its original position, planed the fingerboard and fitted a new bridge that sat on the bass bar this time. Result, I have a sweet, gorgeous sounding bass, with a Lifeline that sounds good through any of the amps and now does all the gigs. And I also have a nice expensive bass that stays at home.
I suppose the point of all this is make sure your bass is properly set up and working correctly before you start swapping electronics about.
Then I went up the road to Tom and George Martin and bought a new 3/4 Solo with a Full Circle for an unreasonable price and it sounded great on gigs and attracted a lot of admiration. ButI felt I couldn't abandon the Bryant and did what I should have done from the get-go. I went to a luthier who put in a new sound post some 20mm from its original position, planed the fingerboard and fitted a new bridge that sat on the bass bar this time. Result, I have a sweet, gorgeous sounding bass, with a Lifeline that sounds good through any of the amps and now does all the gigs. And I also have a nice expensive bass that stays at home.
I suppose the point of all this is make sure your bass is properly set up and working correctly before you start swapping electronics about.