Before the Et-300 collar, my partner and I felt hopeless in our efforts to train our 9 month shepherd kelpie cross. He has no food motivation and it was like pulling teeth trying to get his attention. Before we tried slip leads and even using raw meat as treats and there was no response in him. This collar has improved his focus and response dramatically and it has been a breath of fresh air for us. Using the dog line site was easy enough although it seems a bit busy visually. I chatted a few times with dogline’s team members as my item was out of stock and they kept me updated on its arrival and threw in free express shipping and a dog chew pack. I was very happy with the overall experience with the dogline!