The only negative is that I cannot locate the replacement foam filter #F110 for it. It would be nice to have two on hand so when I clean one the other one is ready to use. I bought this a few days ago and so far I am very pleased. It is light weight and works great. The suction is pretty good also. The battery last way longer then I thought it would. I can do my whole up stairs on one charge. I would recommend it.