Both my dogs have prong collars and I love the way these collars work.
I would NEVER put something on either of my dogs that would hurt them either. While walking, both my dogs are very well behaved and this has to do with proper training and the proper use of the prong collar. Yes, these collars do look rather scary, but when used correctly they are wonderful and effective tools for training.
I have never been to an obedience class where the instructor did not recomend using a prong collar, and along with the recomendation gave the proper technique for using these collars.
BTW, I am a little confused as to what a "halti" is....is it an acutal halter or is it a leash that somehow goes around the dogs mouth??

I have never seen one.........