Well ... I sure don't know!

I can see the logic of Mr. Rutherford as well as Daniel and Rich. For me, matching numbers were more of the goal, but as Daniel points out, once you arrange for the same number all the time, some of the passion for collecting fades. Unless you can replace it as Daniel outlines in his experience. A true collector will always find something about their collection that needs to be 'fixed'. Low numbers, matching numbers, all the variations, all the mistakes, it will always be something that keeps the diehard collector collecting.