I also own one of the Easy Rider hitches, and it was a retrofit that went directly onto my RBW Lil rocker rails. I was torn between the Advanced Air Ride hitch, but had trouble getting over the plastic type material they used for their slide cams. Also they susposedly have had issues with patent infringement etc.
It was a little priceier than I would have liked, but I think it is like buying a good tool vs. a cheaper imitation. When I received it, the workmanship was great. As was mentioned earlier, it is heavy, but you would expect it to be for the movement it has to restrain. Would I buy it again? Yes, without hesitation. My back and recent stomach surgery would not let me travel with the conventional hitch. Good luck on whatever route you decide.