I can't speak highly enough for how this collar has improved my dog's life. I know a lot of people think e-collars are a training shortcut, but mine has absolutely changed my dog's life for the better. He is extremely well trained and has 7 AKC titles, but his prey drive has always been stronger than any training, no matter the reward or exercises we drilled or bond strengthening we did. It's just like his rational brain shuts off when he goes into kill mode. This weekend we enjoyed an absolutely wonderful time off leash at the beach using his Mini Educator. He even was able to call off of a flock of sandpipers and an RC car which would have been impossible without the e-collar. He is excited and not at all shut down with the collar, as we have properly conditioned him to it and built it into our reward based training. I use primarily the vibrate function, and the nightlight is wonderful when I'm out doing horse chores at night. The stim function is surprisingly gentle. I tried it out on the palm of my hand, and I cranked it all the way up to 25 before I could feel it. The maximum setting I've used on my dog is 6, and it just feels like a tap, not a shock. This is a far cry from the SportDog collar I previously owned for my border collie, which was considerably stronger even on a level 1. I'm nothing but pleased with this collar and highly recommend it!