We got the Quantum with all the extras. We use it a lot and absolutely love it. I can not tell it is back there 99.9% of the time. In fact, the _only_ time I can feel that it is there is if I am going very slow through a parking lot or something AND am making a slow turn AND the trailer hits a bump or hole. I then feel just the slightest "wiggle" in the handlebars. At freeway speed I can not, never have felt the trailer, even when it hits a pot hole. That air ride suspension is amazing.
We probably have over 3000 miles on it now and will be putting another 3000+ on it on the ride to Laughlin and back in a few weeks.
Can not seem to find the ones I took at the factory so guess it will have to be new ones! Will get them up this weekend.
Patrick