I know you didn't ask about food, but if money is not important, do consider checking here for one that is better than Hill's Healthy Advantage.
It is not healthy, and there is no advantage. It lists corn as the first ingredient. Your dog needs meat.
Hill's Science Diet Healthy Advantage Dog Food | Review and Rating
Please check that website for the best foods that contain lots of meat, and find one that works for you and your dog.
As far as the collar, many people like the rolled leather ones and the fur savers.