Last I spoke to a Line-X guy, the diff between linX and rhino liner is that (IIRC) Line X goes on hot- And as it cools, it doesnt "settle". So when you try to get, say a .5" thick liner, a Rhino liner would tend to "smooth" out your truck- meaning that the ribs or anything else in your truck would be kinda filled in. Where as Line-X, because each layer application doesnt free flow, even after 1" (the guy showed me a cut away of a 1" application) the original shape was kept. PRetty cool, sold me on line X.