Completely agree, it isn't a difference in sound that I'm concerned about, more the versatility and ease of dialling in a sound I want from the jazz and changing that sound quickly and easily as needed. The band I play in plays things from 50's rock and roll, some jazz and then modern pop so versatility of tone is key! The Jazz is not going to sound like the BTB, but I don't want it to, if I want the BTB tone, i'll use that ! If I can get the output levels similar and then have the versatility to change the tone more without having to resort to pedals, or changing amp settings (usually very flat, let the bass do the talking) then it would be perfect!