Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Intelliclean syatem toothbrush sucks

My purchase of the Intelliclean sytem tooth brush was a big mistake. The tooth brush is not as good as the other sonicare brushes.Replacement brushes for the other sonicare tooth brushes are available everywhere, as are the toothbrushes. The intelliclean tooth brushes and the replacement heads are not available in retail stores, because they are AN INFERIOR product. DON'T BUY THE INTELLICLEAN BRUSH; BUY ONE OF THEIR OTHER BRUSHES.