Where is the best Spanish spoken?
400 million people worldwide speak Spanish, but it is not spoken the same way in Bolivia as it is spoken in Argentina; Hispanics from the US don't speak the same way as people from Ecuatorial Guinea; nor is it the same in Sevilla or Barcelona. Where is then, the best Spanish spoken.
The question doesn't make any sense: the Spanish from Caracas is as good as the one from Salamanca; it all depends on the cultural level of the speaker. Luckily there is in our language an educated standard that makes possible that all speakers, from Jalisco, Bogotá or Zaragoza, understand each other perfectly.