Weber has been making closed cart grills for at least 15 years and knew within a few years that they posed a rust problem. They problem was never dealt with all the way through the E3xx grills....I guess I have little faith that they have figured out a way to keep the closed grills from rusting with the newest models. But, as stated, if you buy one and and treat it accordingly, you can likely keep the problem at bay much longer than normal. Personally, I like my open cart Genesis 1000. It gives me access from all sides to all the junk I keep under the grill and I don't have to worry about a squirrel jumping out at me when I open the doors.