I don't understand how the whole chassis thing can even be debated as to which is the best. Each one will have it's own pros and cons that will benefit some, but not all. Some are lighter, but some people like heavier trucks. Some flex more, but others like a stiffer chassis. Each one will be perfect for the person that wants what it gives. To me it's like comparing set ups, each driver perfers the car set up they way they want it to react.