I have a MIM Fretless Fender Jazz. I've had it for about 3 years now and I love it to death, it plays great. But I'm getting bored with the sound of it. It sounds very boring in my opinion, not enough life in the tone. I'm thinking about a new set of PU's, probably passive. Any suggestions? What sounds good on a Jazz bass (remember, fretless). I just want to have a good tone range, clean bright highs and fat round lows. I've heard good things about the Seymore Duncan Basslines.