I work at Lawndale Forge, maker of Lock N Roll. We do a lot of other work here, including a lot of military contracts, but with the popularity of the new LNR design, we now spend more time on LNR than anything else, even converting a section of the shop into a Lock N Roll packing and shipping area.
The new design does NOT bind, has a solid steel bearing(upset, not bolted on), grease fitting, you can hitch up from all sorts of angles, and the thing is built like a tank. I am very biased because I see how these things are made. We should post some pictures of the process of building these things because it's ridiculous what goes into it. Aside from the laser cutting of the latch plates, every part is made in-house. There are a lot of good options out there, but I'll take the new LNR any day of the week.