I exclusively use King Arthur's flour. It's a little bit more money, but it really is great quality flour. There's a reason that a bag of the same amount of flour is dirt cheap at the grocery store, you don't want to to mess with that stuff. (especially if you're making or feeding a starter.Thanks! I bought it back in October from Amazon (@medtran bought it for me and I paid her back--thanks MT). It truly makes all the difference!