conducted in Wisconsin and Vermont, found that consumer are willing to pay as much as $3 more for organic milk and as much as $1.50 for milk labeled as being produced from cows not treated with growth hormones.   As an added bonus, a recent Danish study reported that organic milk was, on average, higher in Vitamin E, beta-carotene, lutein and omega 3 essential fatty acids than conventionally produced milk.   Deciding what type to include in your nutrition plan really comes down to your own personal preference.