Strangely enough, I have used both. They are both lower-budget, made overseas hitches. From my experience, the Husky is somewhat better than the Robin. The Robin that I had was kind of sloppy, both fit-wise, and for longevity. I had to continually play with the head to get it to stay where it needed to be, it kept loosening while towing, and moving on me.
the Husky only needed to be adjusted into position once, and I never had to mess with it again.
Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.