I started out on a six string, my monster Yamaha TRB6. I loved the range, being able to go down to a low B, being able to play chords and high fills, and also how much easier it makes sight reading (minimal shifts).
I currently still have a bunch of six string basses: the TRB, my Ken Smith Design six string Jazz (currently on the classifieds), my 33” scale Shuker Singlecut, my Warwick Alien and my fanned fret RedSub Coliseum. I’ve also owned a fanned fret Ibanez Soundgear, a Tune, and probably a couple others I’ve forgotten.
Really like having them.