I just recently acquired a Roscoe 6 string fretless (6363) and want to put some flats on it. Currently has DR black beauties rounds on it. Its a 35" scale and with the paperwork it came with its says to use super long strings. Want something that has a nice punchy mid range and would sound good for anything from jazz fusion to tech death metal. And also be black. Black strings look awesome on this bass. Any advice on something that won't break the bank, last a long time and sound great would be much appreciated.