The pattern stands out well from the others, purchasable in packages of two, and patterns from the balls so are not too similar.
This was the main reason for us.
The balls are narrow striped dark gray-dark white.
However, "bite", the narrow strip of something in the eye, and that can be tiring / discomfort when it looks longer.
Who does not like or is sensitive to such "optical illusions", should rather choose another pattern.