I like the Carbona just as well as the Shout brand. Get the same results for less money. Tried one box and next time I bought two boxes. I was worried that at that price, they would either quit selling them or raise the price. I don't have the exact numbers right here, but I know there are quite a few more sheets per box and the price is lower. I use them most often when washing my clothes which I do more often than washing quilts or fabric, of course.
I have seen a recommendation to put the sheets into a lingerie bag so they won't get sucked into your machine's "innards". Haven't tried that, but I have found them in the outer ring of my frontloader. Don't know what that space is called but it does catch various odd items that end up in the wash.