That's interesting, although your talking about a different usage. I have personally seen Rhino get torn to crap on pickups used to haul bricks, where the Durabak held up fine. I've no personal experience with Line-x: just what I heard from the construction crew doing the add-on for our hospital. A couple of them are using Durabak and one the Duplicolor stuff, which he hates. I'd wager not many folks are doing the kind of things that would tear up a bed-liner with their Jeeps: just too small for any real use. But we do have a ton of pickups on site, most using one liner or another. For the money, for a DIY'er, it's hard to beat.
An educated, armed populace cannot be enslaved.