I have powerslot rotors on the 14ff in my 79 c20. I also run hawk high performance street compound brake pads all the way around. I like the rotors. The slots are only milled part way into the rotor, so it leaves a pocket for the hot gasses, but shouldn't make it as weak as cutting all the way through. I do get some brake dust, but the pads grab well when hot and cold and don't seem to chew up the rotors. I have stopped a few heavy trailers with my truck (without trailer brakes) and had no problems. My truck is setup with a ladder rack and tool boxes and averages a weight of 6,500 pounds. I usually get 40-50k miles out of a set of brake pads. I always turn the rotors. The HPS pads on my truck don't make any noise until they start to become worn thin. I don't like squeaky brakes.
My friend tried hawk pads on his vehicles and also liked them.