If your looking for a method of training your dog, Look up and study Positive reinforcement and Clicker training. It's something I've just recently started and I'm really happy with the fast results. With sensitive dogs like out breed why beat them with negativity when they want to please us and when they do they remember? I know a lot of people are very old school, but it something really works, why not try it.
From what I can tell and heard on other dog forums Don's "tool" is just a plastic pinch/prong collar. I can't knock the pinch collar since I use it myself for walking and keeping my dog who is stronger then me easily under control (But I just recently came up with an idea on controlling him using clicker training which I honestly expect to work much better then anything I've tried before)
I say pass on the gift and pick up a 99 cent clicker and the book "Don't Shoot the Dog" which talks about using positive reinforcement in everyday life. I first moved to clicker training (About 4 months ago) after playing this game: 101 things to do with a box
101 Things to Do with a Box | Karen Pryor Clickertraining and realizing how fast Nubs learned new tricks. Honestly in 5 mins I taught him to turn around going right which I had been attempting to teach him for a month before hand AND to bow which I have been working on for 2 weeks before that and he just never understood.