i upgraded my 1500 with the EGR "Big Brake Caliper" kit and ceramic pads and it was a great improvement. However I also upgraded to braided lines to reduce swelling so more pressure was getting to the calipers. I am sure it was a combination of both, but the calipers are still working great after 150,000 miles and lots of heavy braking, dust, mud, big tires, etc.
Glenn is a good guy to deal with down there at EGR. He'll work with you to get what you need and answer the questions you may have.