The only problem I have seen with the rails is if you really tow some weight they will eventually warp your bed. The B&W hitch is bolted directly to the frame and we all know that is solid. If you are looking for towing a fifth wheel with the truck also you can always buy an adapter that is wleded on to the old hitch on the trailer to make it into an ball hitch. Thats what we have done with our fifth wheels and it is just a stable, allows for more room in the bed, and is way easier to hook up.