We have some things that are essential to make a bass a purchase to consider, such as the string number, the tone, the build quality, etc. This is not about those things. This is about those little things that really are of no importance, but you like anyway. Another way to put it: if you were given a choice between two basses equal in all things but having certain minor non-deal-breaker features, what would be the minor things that might make you choose one or the other? For me, I like bolt-on necks. I don't know why. Again, it's not a deal-breaker, but something about a bolt-on appeals to me. Also, basses that have two very different pickups appeal to me; for example, how MM basses can have a humbucker and a single coil pickup. It gives a vibe of greater tonal diversity to me, though two similar pickups in different positions can create similar diversity, and it's sort of case-by-case, I guess.