VX
Green grass (pasture) fed is always better than anything else.
I'm currently switching over from "organic" beef and eggs over to pasture fed (green grass) beef and eggs, and believe me they are very different.
If you crack the yolks in eggs, you can see the yolk has a different color. Shitty eggs are mostly yellow, organic turn slightly orange, pasture fed the egg yolks are very orange.
Thanks for the link on Pemican, when I have time I'm going to look into it further. Not for health, but a way to store food when there might not be great availability.