It might be that they are better than one think's or just another way to generate more capital.
I bought Interstate, for my other trailer, made by Johnson Control--with a 30 day W a couple years ago. These batteries now are $115. 95. So if they go in a year I still get the replacement, so now Ive got two years on my investment. Not if I wait.
If one goes to Johnson controls web site you get a bunch of other makes I've never heard of, and you can't see who they lable for any more. Its a gamble.