We have the JTs on our SOB fiver. They are solid as a rock. We camped for a few months without them, and noticed a huge difference in the bounce and jiggle. I can't feel when people are moving around in the trailer, at all. I remember shopping for the BALs at the same time as the JTs. If my memory serves, the mounting bracket for the front landing gear is much better on the JTs. To me, that is where the major difference comes. If I only lock the back jacks down, I still get a ton of movement. If I went with the BALs I would be left to fabricate a mounting bracket to cover two directions on the front landing gear. It may be a little more expensive, but you are getting more than just the arms with the JTs. I didn't really see it as an apples to apples comparison.