Let me know if I can help you with information concerning the R1Concepts options available, you can check the catalog by clicking the link in my signature and entering your year make and model information there.
A side note about the warping and rusting, I personally have not seen or heard of the rusting from those that I have sold to, but it IS possible that over time the corrosion protective coatings wear out/off. Possibly in climates like those around the ocean, but I have not personally seen it happen.
However, about the warping, I have to lean toward that being caused by poor fluid maintenance. Most people out there do not properly maintain their power steering and brake fluids and as a result they do not realize there is a need until there is a problem. When the brake fluid breaks down, it is possible for a caliper to get "stuck" either open or closed against the rotors, if the caliper let's say on the right side hangs up and will not clamp down when you push the pedal, this can cause excessive heat not experienced in normal braking and can cause the rotors to warp. In the end, for trucks with hydroboost, I highly recommend fully flushing the power steering fluid at the very least every six months if you travel an average of 13-17K miles a year. But the brake fluid, I would fully flush at the very least once a year before the winter months.
Especially in colder climates because the brake fluid will, over the space of a few months, build up condensation in the lines as a result of the heat cycling of the braking system and this can cause unsafe operating conditions. That condensation can freeze and leave you with lines frozen resulting in one side not braking. I am sure many out there have experienced times in the winter, especially when the vehicle is being run in the morning while cold, when you hit the brakes and the vehicle pulls hard to one side, this is usually because the OTHER side caliper is not working, normally due to a line being frozen.
Quality parts and proper maintenance of the fluids for the complete braking system can go a LONG way toward the overall longevity of whatever you decide to put on your truck.