Hiddy.... glad you have had good experiences with the Correo Argentino. Its my experience that the crooks at the handling stations know well that they can do very little with ATM and Credit Cards... since the PIN codes or activation codes are never delivered in the same package as the cards.... however, anything that may appear to have some value will usually be opened, searched and stolen if they fancy it.

Again, Im not trying to be a contrarian but... I would not press my luck with the Correo Argentino.