After reading Michael Pollan's "The Omnivore's Dilemma," I am committed to eating more locally and sustainably grown produce. For this reason I'll be joining a CSA this coming growing season. But which one? I've been researching on line and see that there are a lot of options but I have no way of distinguishing one CSA from the other. Anyone out there with any experience in this area? Any recommendations? My only requirement is that I be able to pick up the produce in Durham or Hillsborough--Chapel Hill's a bit too long a trek for a weekly pickup.