Most electric dog collar brands break up their models into three categories: low power, low to medium power, and low to high power. Dogs, like people, have different levels of sensitivity and temperament. Low-power dog training collars are more gentle and recommended for softer dogs. Low to high power e collars are recommended for harder, high-drive dogs like police or hunting dogs. Most dogs fall into the low to medium power category.
Evaluating your dog's level of sensitivity to physical sensations can help you determine which type of remote dog training collar is most suitable. Instead of labeling your dog as "stubborn", and purchasing a low to high-output shock collar, recognize that the problem may result from inadequate training.
When your dog is in a high-excitement situation, observe how he responds to physical sensations. For example, does he plow ahead in pursuit of a rabbit or stop short near thorny bushes? Is he willing to plunge head-first into freezing cold water for a tennis ball or does he pause? This will give you an idea of whether a low-to-medium or low-to-high power shock collar would be suitable for your dog. Buying an overly powerful shock collar is unnecessary if your dog is more on the sensitive side.