For those that want to have a real Argentine beef experience... here are some cuts that you need to try. Please note that Im sticking with regular cuts of beef, no kidneys sweetbreads and other specialties... although I think they are great... most visitors have trouble with straying too far away from the more traditional cuts.
1) Asado de Tira. Argentine style short ribs.
2) Vacio. Not sure what the US name for this is.
3) Entraña. Similar to what Mexicans call Arrachera.
4) Matambre. Not sure on name either
Please note that the above cuts are for serious carnivores... focus is on flavour, not tenderness... and some of the cuts can tend to be chewey. If you are the beef eater that thrives tender tender tender, then you must tread these waters with care.