For my Spanish speaking friends, @atferrari, @cmartinez, which are the most difficult accents to understand, Spanish speakers from Andalucía, Puerto Rico, Colombia, Venezuela, Argentina?

Watch this:

 

I'd say that, at least for me, I struggle a little bit when listening to Spaniards and some Argentinians when they speak way too fast ...

EDIT: then again, accents can change dramatically in the same country but in different cities ... Mexico city and Monterrey is a prime example.

 

Or even in the same city... London, England.
I have family in Liverpool. I can't understand a scouser or someone with a heavy Manchester accent (i.e. "Coronation Street").

 

Exactly!
Spaniards tend to speak very quickly, specially among themselves, leaving us Latin-Americans flummoxed. .
People from Madrid are the easiest to understand.
But areas like the Basque region, will have some impenetrable accents.

 

Been to P Rico once; I do not recall having difficulties. The rest, nothing serious except some people in the North of Argentina.

Out of your list, the worst was with people from Morocco and some from Central America.

The surprise was in Guinea Ecuatorial; nice accent, easy to understand. They seem to have swapped the actual meaning of the verbs ser & estar. Additional comment: in the outskirst of Malabo, in the local market I met their version of pidgin English. Funny and simple.

 

 

To me, the worst spanish is spoken in Panamá, Venezuela, Méjico. I would not call it spanish.