Does anyone know if there are any physical/design differences between the "MES 30 Black without Window" model (#20070910) and the more current "MES 30 SS with Window model" that might affect how well either one smokes meat? Perhaps in the design of the temperature controller, heating element, wood chip capacity, smoke box size, venting, insulation, door seals, heat distribution inside box, etc? I understand that the latter model has additional convenience and appearance features (such as the window, SS finish, and interior light) but I am not aware of any significant mechanical/electrical differences that would affect how well either one actually would smoke meat. I ask because I plan to get the cheaper "MES 30 Black without Window" model unless I learn that the "MES 30 SS with Window" model smokes meat much better. Any thoughts would be appreciated.