Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Hoover Wind Tunnel Bagless Upright Vacuum Cleaner

I hate this vacuum cleaner. It is messy to empty and the filter has to be cleaned with every use. There is something to be said for having a bag to replace. I didn't realize until I bought this vacuum cleaner how much the bag itself acts as a filter. Now I'm stuck with a machine that I hate to use.