Consumer Reports on when it pays to buy organic: "The truth is, not all organic-labeled products offer added health value. We found, for example, that it’s worth paying more for organic apples, peaches, spinach, milk, and beef to avoid chemicals found in the conventionally produced versions of those items. But you can skip organic asparagus and broccoli because conventional varieties generally have undetectable pesticide levels. You can also pass on organic seafood and shampoo, which have labels that are often misleading."