I'm new at this fretless thing and I'm still trying things out. I have a MIM Jazz with Duncan Antiquity pickups. It started with Fender Flats, which I changed to Chromes, which I thought had more charactor. I then went to Rotosound Swing Bass rounds because I couldn't get my Weather Report Discs out of my head. I thought I had found the holy grail, but I got tired of the relentless ringing. I put the Chromes back on and with the new pickups I really think I'm dialing in on things. But I'm willing to try new things. I like the rumbling grunt of the flats, but I'm looking for ever more belly, more muscle without getting back into the roundwound buzz, which I love for solos and color, but not for straight playing. It's not just a matter of brightness, I still roll some of the treble off with the Chromes. Anyone remember Stanley Clarke's acoustic tone on "Romantic Warrior?" There's always some buzz going on about TI's, but would they be a step in the right direction? Their ads even suggest they really lack sustain, which I like, though that could be residue from my guitar background. Maybe some of you experienced people could make some suggestions. Thanks!