The seatbelt collars I've owned over the years were never as good as a quality nylon collar. Maybe it's the dog and the abuse they inflict on the collars, I don't know. I know that year vs year, the nylon collars I own now outlasted every seatbelt collar I had within the same time frame.

I've had some seatbelt collars from Stillwater and a few others, and I personally would never pay for another collar made from that material. They simply do not stand up to the wear and tear from my dogs.