After searching all the threads about Pat's vs. EZ-Hitch I have decided to go with the EZ-Hitch simply because of the price factor. Anyway, I was checking out Ebay item 300185588178 and see one of the pictures shows the EZ-Hitch as it appears on the Carter and Sons website and the other picture shows a "Round Top" version of the EZ-Hitch. Does anyone know if this is a knock-off or if the design has been changed?