yesterday I was in a concert, an afro cuban style band, the bassist played a good 5 string fretless bass with a good amp (big cabinet ampeg) but she used flats, i couldnt distinguish some notes, too muddy and not a lot of punch or thump, like lifeless, the armonic content in a roundwound string is very noticable in a situation when you have a band with a lot of instruments and percution.. even if you have the tone roll off