As far as the thin wall on Weber it is warrantied for 10 years and I have 6 years on mine which stays uncovered with no issues except for a knob which Weber sent a full set of four 2 day shipping.
The Weber warranty is not "bumper to bumper" for 10 years. It's a limited warranty and what parts are covered depends upon what model you bought. For example, if you bought the model with the stainless flavorizers and grates then those parts have a longer warranty than if you bought the ceramic coated version.
I've had a natural gas Weber Genesis E-310 for about 5 years that sits outside my house 365 days a year and is rarely covered. I use it all year long even during our wonderful New England winters. I've had a couple of warranty claims on my grill. After a year or so, the chrome finish was flaking off on the Weber logo on the lid. This year I made a warranty claim on the cook box which warped. I also tried to make a warranty claim because the bottom of the cabinet was rusting. They said that part of the grill was only warrantied for 2 years. HOWEVER, they sent me the part at no charge as a courtesy.
Bottom line . . . Weber makes a good product and they definitely stand behind it. Their customer service is top notch and I wouldn't hesitate to buy another one of their grills. However at this rate, mine will probably last another 10 years. So, it might be a while before I'm in the market again.