I'll agree with the other guys that the material isn't as important as the shop that is putting it in. A quality shop will make a huge difference in the way it will look and hold up. Some things to look for, as you should go to the shop you intend to use, and check out their work first are: Do they remove the screws and fittings in the bed, like the tie downs? Do they give a good coverage up under the rails? Do they spray the tailgate access panel off the truck, so that if you have a problem with the latch, you don't have to cut the liner to get at it. I have my Line-X in my 04 3500 and just hauled a load of logs, 4k worth, from CT to VA and after getting the bark and dirt out, you can't tell I hauled anything. To remove the logs, I chained them to a tree and drove the truck out from under them. It works for me.