It was more exciting when Mexican clubs used to play in them (Libertadores and Sudamerica). I'll never forget when Bofo Bautista got under Palermo's skin and made the Boca fans freak out lol. That was awesome .
Club de Alto Rendimiento Especializado Independiente del Valle. I had to check it, first time I hear about them. They wear an ugly vivid purple shirt which could easily be the next season's Juventus second or third kit.