I have tried four different kinds of strings over four years, and am still trying to hone in on just the right strings to get the "best" sound out of the Broadkaster bass. I am basically looking for as versatile a tone as I can get, with sustain and some high overtones, but not being dominated by the high frequencies. I have tried D'Addario EXL 165 nickel wound light top/medium bottom (.045-.105), which gave nice sustain, but seem too bright, making the hollowness of the bass too prominent. Then I tried D'Addario chromes (ECB82), medium gauge (.050-.105). That reduced the brightness some, and retained most of the sustain, but still didn't sound like what I wanted. Then I tried Thomas Infeld jazz bass nickel wound flats (JF324, .043-.106). They still seemed a little too trebly, so after 9 months or so with the TIs I tried LaBella Deep Talkin' Bass flats (760FL, .043-.104). These are indeed deep, minimizing the overtones, but almost to the point of being very thuddy with very little sustain.
I would love to hear of some other strings different forum member have tried and how you felt about the results. Otherwise I may go back to D'Addario chromes. You might want to try those yourself.