Great write up! I've been in this vortex for quite some time now trying to figure out which way to go! My '09 had a drop in, and now my '11 has nothing. It's hard to come up with the $500+ for just some plastic in the back, but already my bed is showing the tell tale signs of having no protection. Your write up has definitely made my mind up, now just have to have the boss authorize the funds! Living in Northern Vermont, I would have to travel for Line-X anyways, closest to me is Littleton, NH. Bow, NH shouldn't be too much further away for a great product.
The price is the biggest hurdle but let me tell you, the end product is really nice. We finally feel like we can get up in and work in the bed safely and without worry. Over the winter we hated to put stuff in the bed for fear it would scratch or ding. We also hated that there was no grip when wet. Line-X solves all of those issues.
Line-X of Merrimack Valley is a great place to get it done and only 2 miles from I-89 coming from VT. Let us know what you decide!