Walton Feed is your friend:
http://www.waltonfeed.com/ As it goes, there are many types of emergencies. I'd like to try to prepare for all of them. All of the below is still work in progress, but I try to identify what I would need based on scenarios.
Scenario #1: Building collapse based on earthquake / Terrorism - typical things if I'm still alive: whistle, water, cylunme light, flashlight, mask, first aid - All this would be in an EDC
Scenario #2 - If I am able to get away after a disaster, there would be 72 hour emergency kit in the trunk (BOB).
Scenario #3 - If I am at home, with family, load up the family BOB and go!
Scenario #4 - Is where the shelter in place, long term survival comes in play (e.g. wheat, etc)