i currently have a weber genesis and it still works fine but we are thinking about getting something a little larger. the old one is at least 8 years old. what we would like is something with lots of cooking surface and a searing burner located in the same cooking area, not a separate section. that way i can use that as part of the main space. a regular side burner would be nice but isn't essential. stainless would also be a plus. as i said in the title, i'd like to keep this under $600.00 if possible. any suggestions are welcome.