I have not tried such collars before. Today, the first time I dressed my dog and I have to say this collar really works. Dog more obedient vibro mode allows you to switch her attention to the execution of commands. The sound mode also concentrates dog attention on the commands. Shocker mode has tried only on itself so far. The feelings are unpleasant but quite bearable, perhaps for a dog will be more sensitive. The collar is good with reflective inserts. The remote allows you to adjust the current strength and vibro power. I recommend it to everyone!