I bought a 5 str but I hardly ever use it , it's more of a just i case I might need that low B, but . My 5str ha 35" scale and my 4s has 34.then you have to strech yor fingers more but anyway it is might be easier for some to learn hard stuff on a 5 str since there is less space between strings. If you have an 34" scale 5str maybe with an thin neck . So if you have small hands/fingers, I think it might be easier to play a 5str if you leave the low B be. Did that make sence to anyone else?
Many people believe this.