I got D&D Stainless slip on. After 2 yrs of use its basically rusted junk.Rust started in the 1st year around the exist and near the joints. Sound has deteriorated as well now its more annoying then pleasant.In retrospect I would of not bought D&D. You may save money at front but your investment won't last more then a year.
That is horrible, I have never been a D&D fan cause I didn't like their look, but I always thought they were supposed to be well made. Have you contacted them?