What experts say that the read text is the best RC? I have never seen anyone say that it is. It's just one of several possible RCs. I think the best RCs are ones that do not require one to have anything with one, so hand through palm and nose pinch are better than re-read text. However, it is always a good idea to do two or three RCs in a row, and re-reading text is an ok one to do as one of several.