I'm not into the medieval torture tools...
JUST KIDDING ALL OF YOU! Ha ha!
But seriously, I've never used a prong or choke chain, never will. There are plenty of other methods that work better for me and my dog.
If you have the time an obedience class would do both of you some good. Speak to the shelter where you got Buck from, they might have some reputable trainers numbers for you.
If you do get a prong, I would make sure that you have someone knowledgable fitting it and showing you the basics first. They CAN do damage if not used properly.
Good luck!
