Went with the EBC slotted black rotors and their HD Green stuff pads all the way around. Ordered it all from Summit Racing.
The factory rotors turned blue and smoking, hauling my Lance cabover camper and 18' car trailer thru the mountains in NorCal. The truck only had 45,000 miles on it when the rotors went away!
The new brakes are awesome and really can haul it down to a stop! Had no problems this October, hauling the same rig set up in the same mountains in 95 degree weather.