I often hear the word 'thump' to describe the sound of many flatwound strings used by players on this forum. When I hear the word I imagine a deep dull percussive sound. I have never strung my bass with flats before but I'm interested in looking into a set. Two important things I'm looking for in a set of flats and thats note definition and sustain. A set I'm currently considering are the Lakland Joe Osborn signatures which some people believe to be the same as GHS Precision flats but I'm not sure if this accurate as I've heard the GHS strings are constructed on a hex core while the JOs are constructed on a round. Anyone else have experience with these stings? Is it close to what I'm looking for? Any other recommendations that won't cost a lot?