Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great

We purchased the Bissell 9400 to replace the Bissell that we had. It is fantastic. With the 12 rows or brushes, it fluffs the carpet up and makes it look almost new again. Our old Bissell only had 2 rows of brushes and I thought it did a good job until we used the 9400. We are very pleased with this purchase. We had to work on the turbo brush to get it to work after the first use, but we were able to get it working again. That is why I only rated it 4 stars. Overall, it is a great product.