It's all right, Carmen.
We use them on Seamus and Kirby. The halti doesn't work on Kirby at all--that's a Samoyed for you. But, what works for me doesn't work for everyone else.
And since I have long-haired breeds, regular collars aren't very good for their hair (well, honestly, no collar is great for their hair).
The reason we have Seamus wear a check collar is that he always manages to escape from a regular collar if he fights hard enough. This has always been a problem when we want to take him somewhere in the car, because as soon as he sees we're getting to the car, he starts kicking and bucking and the collar is off in the blink of an eye. Not so with the half-check colllar. Since using the half-check, bucking and kicking has gone down to a minimum.
But, this is what works for me.
And, our dogs are not wearing any collar 90% of the time.
The joys of having a large yard, eh?
But, it's good that you have a differing opinion, I think, because people can better make their own decisions if they hear at least a few differing opinions.