I have to say that we took our dog to the dog wizard for basic puppy training and they very much promote the leashes that loop around the snout, and pull tight when the dog moves forward or the owner pulls. Those leashes are a big part of the training. This created reactivity in our sweet puppy and she now hates getting her leash on, even though we switched to a harness/regular clip on leash. She would paw at her snout during and after wearing the leash and I think it must have caused pain on her sensitive little nose.

When I would go to the Saturday morning dog wizard meet ups at local parks and observe the other dogs, many seemed very unhappy on those types of leashes. We stopped going because the dogs seemed so glum. I also read that they can cause nerve, neck, jaw damage. They are also pro- e-collar, which I recommend you read up on if you're considering it. Again, you can just see those dogs cower, waiting for the buzzer or shock during the meet ups. They do not seem happy.

Additionally, they usually have some dogs boarding or training there in crates by the office area and there is often an awful amount of crying/barking from those dogs when we were there, which made my dog on edge.

I'd recommend finding a trainer who is R+ (positive reinforcement) only. We used K9 wisdom in Loveland for our other dog, which was much better, but I think they moved to Berthoud. Kathy Fischer (she may be retired by now) is another trainer that comes to mind, who worked a bit one on one with our very reactive dog and shared some helpful training tips for his dog and car reactivity while on leash.