I’d say always use the instrument you feel most comfortable with, and which you know how you can shape its sound the best. I flirted with a Jazz bass last year, but in a band mix I was nowhere near as familiar with how to get it to sit in the mix as I am with a Precision. Similarly whilst playing I’m so tuned to my Precisions that the Jazz in my hands wasn’t where I’m used to hearing the bass. So lesson learned, although I like Jazzes ultimately I realised, just take a Precision is what works for me, the instrument I’m most comfortable and connected with.