I've actually tried a lot of P pups, but now I'm venturing into the J's. Got an Essex fretless, and after playing it a little while, I really found the sound to be pretty unremarkable. I was getting some mwah, but not the sound I really wanted. Fortunately, I had a Duncan SJB-1b pickup here from a previous project (in basically new condition), so I wired it in, not worrying about the neck pup. I am thrilled with the sound. The mwah is much better, the clickiness is gone, and it has that horn-like swell I was looking for. No question that I'll match it up with an SJB-1n soon. I was close to getting rid of this bass, but no more. So I'm pretty much a Duncan fan. My Precision didn't have the original pickup when I got it, and it has a Duncan, now this bass is going to have Duncans.