This is my 3rd Weber in 26 years.  I purchased this Genesis E 335. Right out of the box you could tell thought that went in to the new Genesis. Quality parts and design. The internals all well constructed with thick gauge SS Flavorizer bars and heat deflectors. Awesome new burner design! Housing is one piece heavy duty aluminum.  Drip tray has nice pitch for grease run off to pan. Valves are brass. Side tables are robust.  Wheels large and moves / locks in place. All in all very happy with build quality. Assembly went well with easy to follow instructions. Great warranty. Very happy with purchase. 

One ding- the covers are not made the same as they used to be. Thin with not much material. I can’t see the cover lasting long though.