Now that you hate us all for being smartasses, that is an impossible question. It's like saying who makes the best pickup, except that with a truck you can get the same drivetrain in almost all brands. A better question would be how to spec a dump truck for my operation.
When I was in the dump truck business, I ran all Macks because I had been a Mack mechanic, (but I had been an IH mechanic too). One of the biggest points was that Hughes Motors (who I liked) had a dealership here, and Carolina International (who I didn't like) was 60 miles away. All other truck dealers were at least 60 miles away in Charleston or Florence.