I definitely like the Soul Source dilators.
I'm sorry, I don't know how else to explain it, but no, the bigger dilators will never achieve the same depth as the smaller ones. It doesn't mean you lost depth, it just means vaginas work that way. (In other words, if you check your depth with the smaller dilator, you should *still* see the same depth you did before. If the bigger dilator reaches greater depth, the smaller one should also increase in depth proportionally, so that the bigger will always be hitting less deeply.)