After 260 replies... I know you need more thoughts on this.
I only bring one. I use to bring 2 for different sounds, but I know it was just for me. So went with one. Then the new band had a few songs in Eb, so I started bringing a second 5 string to play those songs. 20 years of just playing 4, could never get use to a 5 string. So got a digitech drop for those Eb songs and I'm back to just one 4 string. I should probably have a backup, but I like living on the edge. I'm crazy like that.
I only bring one. I use to bring 2 for different sounds, but I know it was just for me. So went with one. Then the new band had a few songs in Eb, so I started bringing a second 5 string to play those songs. 20 years of just playing 4, could never get use to a 5 string. So got a digitech drop for those Eb songs and I'm back to just one 4 string. I should probably have a backup, but I like living on the edge. I'm crazy like that.