I own 2 double basses, one with coat hanger type wire and the other (Shen willow) with what I assume is braided steel. I believe replacing the coat hanger wire will improve the first bass. Is there a better option for the Shen? I tend to like lower tension strings, guts or gensslers (tempera/APs). Do some people use rope? Any reports on Gensslers standard wire and/or v.expensive premium wire?