My two dogs like them. My dog penny is a play baby and water baby. She absolutely loves them. Sometimes she will try to hold both of them in her mouth at the same time, but she can't. They chew on them all the time and you can't see any marks on the Kongs.
Most people write letters only when something goes wrong or they are dissatisfied.
That is usually the case with me also. We adopted a three legged dog from a local shelter May 24, 1993. We bought strong nylon type toys as the vet suggested. After several stores and numerous types of chew toys we stumbled upon the magnificent King Kong. Needless to say his pit bull jaws have not done any destruction to the King Kong.