You're right. Precision really isn't the right word. I meant something more like most useful. In the field that produced this paper, eV is going to be the most

You're right. Precision really isn't the right word. I meant something more like most useful. In the field that produced this paper, eV is going to be the most convenient way to specify it, because it relates to the movement of electrons and not just e.g. exploratory particle physics.