They are pretty much the same, A&M's are just larger English Whites. None of them have white meat though. I advertise mine as English Whites even though they are as big as the jumbos because I don't want to get into the whole Moby Quail thing. If you cross a white to a jumbo you will get mostly Jumbos, some whites, a couple of whites with more spots than usual, and I think it is where the white bib in the jumbos comes from but am not sure...