Instruct: Classify a review into positive or negative sentiment.
Query: WOW

This is the first product I've ever purchased which performs even better than it's advertised claims. I thought my floors were clean since I vacuum daily with a Roomba and at least twice each week with an upright because of my asthma. However, the amount of stuff that that the DC14 Cyclone pulled out of my carpets and furniture can only be described as frightful. Congratulations to Dyson and company on a truly outstanding product!