Well, as previously stated, I am in the "unbleached" bleachers, but...I use oxygen bleached filters when un- are unavailable, but continue to shun chlorine bleached filters because of the environmental damage the used bleaching slurry does to watersheds and water tables, as well as the chloriney taste they impart to coffee. I'm not selling a point of view, just stating a preference. Flour? I buy unbleached, mostly whole wheat or whole grain, except for cakes. I like dense, chewy breads but not dense, chewy cakes.