It also depends on what you are prepping for. Me I just worry about economics and not the end of the world.. I'm set to keep us eating when others are starving. but more of that is geared to growing and foraging not just packing enuf back to feed us for 20 years..
There are many forums and blogs that really do have the stats on everything too. From the shelf life of canned goods to pasta and rice and almost everything under the sun..
I like this forum better. I want to be a "Sufficient Self" not a prepper cuz I think if we are all more self sufficient we won't need to prep as much it will be a lifestyle.
darn.. got wordy again!!!