I've been researching the Goosebox and like what I am seeing. Whenever I see someone at the campground with one, I make sure to ask them their experience. Just ran into someone in Tennessee last week with a Goosebox, he LOVES it. Says it rides great. He said he didn't notice any improved ride quality over his 5th wheel hitch, but he likes that he has the free bed and no 200# hitch to worry about.
Other people I've talked to say that the ride is better with the Goosebox, no chucking. I know some people with the 1st gen Goosebox had complaints about the airbag losing pressure, apparently that has been fixed with the current model.