Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: great product, great buy

The best! I have been using add-on portable hard drives since back when they were on 10GB, huge and heavy. The WD 160GB is almost everything I have always wanted and not yet found before -- they have huge 160B storage and are incredibly small -- three or four of them could fit in the space that other small drives claim. I suppose the only tradeoff is that for this size and with USB self power, you can't yet get a 9600 drive this big (160GB) and a space so small, but the WD160 drives are as fast as my internal drives and they look fantastic. I am now own 4 of these and now I can bring huge video libraries with me all in less than the space of a paperback book.