I play in a classic rock cover band that also does some straight electric blues. My main bass is a Carvin PB 5 PJ which has round super brights. It cuts through the mix great, punchy slap bass (on the one song I play slap). I love the versitility so it will remain my main ax. I have a Fender P with flats that I use for the blues tunes because I want to back off a little and not compete so much with the guitars. Also for quieter songs like Fleetwood Mac's "Gold Dust Women" where I don't want to be too present. Just bought a used 2012 Limited Edition Jazz American Standard from GC (1/2 original price!). It came with flats that sound really good....different than the P of course, but good. I like the way it sounds. My question is simple to ask but I'm having a hard time deciding. Do I need two basses with flats, or should the jazz get rounds? Pros and cons, please. Trying to get the most versitile set up.