I like the canned better, especially the chunk in srping water. I used to eat it in oil and like the flavor of that as well, but not the extra calories. As far as brand goes, both Chicken of the Sea, and Starkist are comparable. As mercury is stored mainly in the fat, and most of the fat and fatty flesh is cut from the tuna during processing, I don't think there's a huge problem with methyl mercury poisoning from canned tuna. Fresh tuna is another story. It's up to you to remove the fatty and oil rich parts of the fish. Ironically, it's that same fat and fish oil that contains the heart-healthy, brain freindly omega-3 fatty acids that are so valuable. It's so sad that we've messed up our own planet so much that the very food we consume is dangerous to us. And even more sad, we don't seem to be willing to change our ways.
Seeeeeya; Goodweed of the North