I can always easily understand the Mexicans, the Peruvians, the Chileans and most Central Americans. I have a little trouble with the Cubanos, Boricuas, really with the Dominicans, and to a lesser extent, Colombians and Venezuelans. It is usually a class thing, where I can’t understand the peons very well, but I can understand the newscasts and the entertainment just fine. (I understand Argentinians, too, but get a huge laugh/kick out of their accents. I don’t know why, it just tickles me.)
Ayudame Dios, but I find this topic fascinating. Now you must tell me what you find ticklish in the Argentine accent? THe others I’m fairly familiar with, los Cubanos very much so.