This is the wrong forum for the question, do you mean strings or the actual bass? Being an upright bass player, you also become a semi-luthier, learning how to take care of problems yourslef. Like moving a bridge and tailpeice, change strings, adjust a nut, and plenty more that have yet to pop into my head at the moment. The point is, is that like the ever wise DC said, if your lucky enough to find the right strings to make a bass sing the way you want, you can use just one bass. If you can't (which some of us havnt) you can find one set for each and take them on and off when you need them. Its inconvenient but it works. @ DC, I ordered Belcanto's to try, I have heard pos and neg about them, but strings are so sensitive, any factor can effect them, temp, humidity, who packadged them that day, factory temp, who spun them, what peice of material you got, ect. You know this, its just for the archives. GL finding the right sound. On my bass I have Obligatos, there ok I don't love em or hate em.