Although I completely agree with you that organic foods are much better for you, I have lately been getting into the idea of buying locally produced foods over organics. The reason for this is that it is a much more sound ecological practice. For example, it takes something like 400,000 calories to transport a strawberry from California to New York, and you only get 5 caloies worth of energy back.
If instead, you buy locally produced foods, and stay with what is in season, you reduce the amount of fuel used to transport your food, thus reducing CO2 emmisions, and cutting down on the global warming crisis.
It may not be much, but everything you do to save on fuel and other energy consumption means a slight improvement in greenhouse gas emissions, thus helping to at least mitigate this crisis. If everyone were to do this - consume a little less, consume what you must from closer to home, and installing whatever energy-saving devices they can afford in their houses (such as using cf lighting, installing flash hot water heaters, etc.), recycling, turning off electrical appliances when they are not being used, and so forth, it would add up to a lot less CO2 and other greenhouse gases being spewed into the atmosphere.
Buying locally grown foods is a part of this; if you can get locally grown organics, all the better. Gardening and installing greenhouses to grow some of your own organic foods helps too.
Organic foods are undoubtedly a good thing, but at this point in time, buying local is better.
