Wow, i cant believe i beat WAGONBOY to answering this post. Slam Specialties seem to be the best. Reading the technical specs of just how much they lift, psi, they dont expand, and they have ruber bumpstops inside, they seem like a dream. WAGONBOY has em on his wagon, no shocks, daily driver, and he hops it. If that is not enough abuse for a bag to have a good name, i dont know what is.
I am gonna hold my breath now until he posts his 2 cents.