I am a small business owner and I use the truck to haul a fuel transfer tank and tool box. I am pleased with the power of the Cummins. There is no noticeable loss in whether empty or loaded. My problem is the build quality. This truck is just over one year old an it has been in the shop more than my Chevy that has over 130,000 miles. They have replaced the rear diff. seal, the rear window, the main computer, and now my check engine light is on. All this on a vehicle with less than 32,000 miles. It becomes a hassle trying to run a small business when you cannot use your truck. I should have listened to my wife and bought a CHEVY!!!