I purchased the stratos 3 weeks ago , iam very pleased with the quality,functionality and the power of the suction, I have 4 dogs and a cat , they all shed   Constantly and it’s been hard to keep up , I’ve used the stratos 2x a week and the home is back to my home ! And the place smells great thanks to the room deodorizer built in ! This beats my old high dollar unit 100% . I’ve actually spent less time cleaning and more time relaxing thanks shark you guys did it right!