I'll start off by saying that I've used several Berlitz products, as well as Pimsleur and some other language products. This collection of CD's is good for driving and learning at the same time, as it is relatively complete as far as the audio portion is concerned. But the book is also a welcome addition, as it contains things that aren't on the CD, so that you can enhance your learning. I've 'graduated' to the Advanced series, so this must be doing some good. My only complaint is that the book doesn't explain some of the intricacies of the audio portion of the CDs, so you have to look them up using other sources. However, since this is intermediate level, most users of this ranking would have other materials to reference, so it is a minor gripe.