I got these yesterday and put them on last night. I think they seem pretty sturdy (170 pounds bouncing up and down on them) and will provide my wife/kids an easier entry method than others I have seen. I like the black textured finish on the entire set and the step is nice and wide, but seems to just a plastic cover on top of a metal bracket. I'm sure if it hits something pretty good, it may crack or something, but the metal plate underneath should provide necessary access if that ever happens.
Installation probably took about 3 hours, but should have only been about 1.5 hours. I had trouble getting the body mount bolts out and the replacements back in. There must be a floating nut in the receiving end (body itself) that I had trouble getting the last bit of thread out of and the first bit on the replacements in. Once I figured out that you had to continually put downward pressure on the bolt to keep the nut snug against the body, they went on with ease. I've got a question in to Rampage on the "U" stiffener for the rear mount, but overall I'm happy - especially for $165 out the door on Amazon.