Anybody ever try those audio language courses they sell?

Tomorrow is my last Italian class for this "semester". I'm thinking of maybe using the money I would have spent on class and instead buying the audio "teach yourself" CDs. I am really conflicted about this though, since I love taking the classes. I am almost through with most of the elementary rules of grammar, so I have learned the basics of most past tenses, present tense, and some colloquial expressions.

Part of my dilemma is that since the class is only once a week, although it's good in terms of learning the rules of grammar and vocabulary, I don't feel like I'm getting to hear or speak it enough this way. Also, if I sign up for the next class, which consists of ten sessions, I will miss the last two classes because I'll be in Italy.

I've been thinking of maybe getting one of the Rosetta Stone or Pimsleur CD courses.

Has anyone used these? Are they worth the money? Are either of them more interactive or more focused on hearing and speaking it than others? Are there others that you have used that you especially enjoyed?

Any recommendations would be appreciated. Thanks.