Local or Organic?

Here's a question - what is better for the environment, to buy local produce or to buy organically grown produce?

Assuming that locally grown organic apples are not available at my local grocery store, [let's face it, going to the farmers market for the weekly grocery shopping is just not likely to happen] should I purchase the Ontario grown non-organic apples, or the organically grown apples from the US?

In my opinion, when taking the environmental cost of transportation and the benefit of supporting local agriculture, I think it is better to purchase local over organic.

Am I wrong?