Sourdough baking

Ok - I have always used unbleached all purpose flour in the starter and thought it so unfussy I didn't worry about the brand until one time my husband got store brand all purpose flour, and my bread was struggling, it took me awhile to figure out it was the flour! So some all purpose is so low in gluten it's almost cake flour. Now I am more specific when I ask for flour, but Gold Medal or King Arthur all purpose unbleached work so well to keep it healthy, I do not use bread flour or whole wheat. Used to have a rye starter but this one is so much healthier and easier to use - it's all purpose starter!