Hi. I‘m upgrading a not-so-good MM style bass, and searching pickups for replacement. I find EMGs and others around USD 100 / 110 and the Seymour Duncan‘s “3 coil Music Man” around +200... Can someone tell me why so much price difference and wich are the advantages? I assume that ANY humbucker can be routed for single, paralell or series selection, am I wrong? What do the 3 coils do different? Thanks.