I'm a four string player who switches between standard and drop D tuning regularly in my current project. Have hipshot D-tuners on both of my main basses. I'm going to be assembling my first five string and wanted to know your recommendations about whether a D tuner will be a worthwhile investment, or a redundancy, especially as I'm considering it for the E string. Will it be easy enough to transpose drop D lines over to the B string? Will the timbre and convenience of open strings not translate to a different string, different gauge, and different position?