Face it, the bridge on my MIM fretless jazz is dead and gone. I'm getting a new bridge. What are the major gains out of slapping on a hi-mass bridge like a Gotoh or a Badass on a fretless bass? On a fretted bass it adds to sustain and harmonic content, which IMO is significantly removed on a fretless, so is there a point to adding such a bridge? If I get one, what would you recommend? Or should I get an American Fender replacement?