Like many people I was hesitant to pay this much for a grill , but I read all the reviews and went to look at them in the store. I could see the difference in quality and boy am I glad  I bought the 310. As I put it together I could tell it was Weber quality. Not a scratch on anything. All went together with no problem. The first time I used it I checked to see how much heat was coming off of the top. I was surprised to see that very little heat was coming from the top compared to my last grill.And when you lift the lid to turn the food, it regains its heat very fast. It also heats up faster than any grill I ever had. So far its the best grill I have ever had by far.