I find that the fats in some of the grass-fed beef I've had to be a little gamey. The other thing I found is that if you're going to do a crockpot stew you're better off going conventional meats unless your cooking it less than 8 hours. I made a stew with grass-fed beef and it was so dry and chewy it was awful. Luckily most of the conventional raised stew meats don't have a lot of fat, so I don't feel so guilty when I use it. On the otherhand the naturally raised pork I get becomes delish when I slow cook it, but it does carry a lot of fat.