Tiffin vs Newmar

Your point was taken, and to consider that some will complain if you hung them with a new rope, and every little thing is a major catastrophe, The Newmar coach on a Spartan Chassis, driven by a Cummings is as good as it gets in this industry. and no single manufacturer can please every body.
That said, you simply can't expect the lower end coaches that use chip board as a major construction material, to compare with the high end quality builders like Newmar.