We got a Titan brand prong from a pet store and it works pretty well. I don't know how well this brand would work for a very strong puller. Keep in mind the smaller prongs are much easier to size than the larger ones.
I would look for a trainer to show you how to use one correctly. There are a lot of videos online of people using them inappropriately.
It will help you have more control while you work on training. If you train well, you won't need a prong or head halter to have your dog walking on a loose leash in the future.