Own two other Pimsleur languages, and it's likely a statement more about the Korean language than Pimsleur, but this is no where as good as either Japanese or Spanish. Pronunciation is very difficult to understand, and lessons follow "stock" Pimsleur without additional explanation. For example, no explanation of how to pronounce the hybrid "R-L" sound; in Japanese lessons this was much easier to comprehend. Have listened to lesson 1 on three separate occasions and still cannot remember the first phrase, "Do you speak English?" For this specific language, Pimsleur Basic system fails to explain necessary details.