The basses I use are Spectors, one is all passive, the other has an active circuit with passive pickups and I love the power of that active circuit and the tonal range it has. Although i still love the mellowness of my all passive bass.
Alright, I just watched a demo video for a Spectorcore 5 string and I think I'll get one after I get a Euro series bass. I'm thinking lined fretless on the spectorcore for something a bit different