SuperKirby - interesting you mention grass fed vs grain fed beef.
I have heard people talk about this, and notice that its more an east/west deal than anything. I guess they even have different shades in meat.
From what I know, I have always had grain fed beef, but I haven't bought any beef / pork / chicken at the store in about 4 years now, so I am not even sure, other than the cows I see on the range and the feedlots around here.
Later,
Marcial