Simba Horsch CO and Sprinter drills: We last took a used buying peek at Simba Horsch drills when the CO range was about to be replaced by the still-current Sprinter series. Although there are key differences in their designs, both CO and Sprinter drills operate in the same way. So, those on the hunt for a used Sprinter may find that the right CO also fits the farm’s seeding bill, as James de Havilland reports