Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Fluenz Mandarin 1+2: A Good Choice!

I thoroughly recommend this product to learn Mandarin. I think that it has the right combination of native speakers and explanations in English. It gives you enough opportunities to hear the native speaker, the choice whether or not to see the english translation and the pinyin writing combined with the voice, and to write your own sentences and words in Pinyin. It also gives you enough opportunity to record your voice and to compare it with that of the native speaker. It allows you to repeat and fast forward as you wish.