I like sport dog brand. The training video with it is the reason why. I have a chessy and lab. Both are high strung, wide open hunting dogs. Mine is only the 400 yard model but they have some for a mile. The video helped me to have dogs that are very obedient. With the collars on or off there are no bad days whether hunting or social situations. They are very well behaved, yet tireless in play and hunting.
