I thought the GCWR a really useful figure. The owners manual mentions it a couple of times but never tells you what it is. I realize that there are other numbers that are just as important for evaluating whether a TV and trailer can match up.
After seeing the Lance 1575, I've taken the 1685 out of consideration. The 1575 is all that I need/want and it's narrower, smaller and not as close to the vehicle's limits.
But I still would like to know the GCWR of the JGC, in case it is more limiting than the tongue weight.