The Blue Dot used to be harder, it is now just another white dot. Both move too much. The Storm "sport" balls were very hard in comparison to most plastic balls, as are the vis-a-balls, so they go longer. Right now, the ball that is the best pure straight spare ball is the "Spare Storm". (I currently have a vis-a-ball, a maxim, soccer ball, white dot and "Spare".)
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"I don't mind if you don't like my manners. I don't like them myself. They're pretty bad. I grieve over them on long winter evenings."