Slotted or drilled, the key thing is quality in the manufacturing process. Any bozo with a drill press can put holes in a rotor, making rotors with holes that work without eating pads or cracking, thats a bit harder.
As far as slotted eating pads, again, it depends on the quality. My car has slotted rotors as OEM, and the pads in there have been in for maybe 30K, and are doing fine, lots of life left.
But, all that aside, depending on your application, your best bet might be to just upgrade, if you can, to vented rotors over solid. Unless your really maxing out the stock system, that change should all you really need. All else being equal, the slotted or drilled rotors never have "more" stopping power over ones that dont, just that they dont lose under hard repeated applications.
Since this is a truck, we're not talking lots of threshold braking, but more of the down the mountian kinda thing. right?
EDIT: Looking it up, I see your truck came with vented rotors to start. In that case, Id lean towards these right here as the upgrade path for you.
POWERSLOT - Faster Stops Made Easier