I have ever owned.  I recently moved into a smaller place that required me to be space conscious and when a friend told me about the Shark Stratos I had to have it.  I have tried other lesser quality vacuums in the same size category and they are either poorly made or lack the required power to consistently clean my floors the way they should.  this VC is so easy to use, and so light it makes cleaning a joy rather than a burden.  the power on such a small device was a pleasant surprise and its nice to know I will not have to make trips to the store to get a new one for some time.  the odor neutralizing technology is super and makes my place smell clean and fresh.  my advice to anyone looking for a quality machine that is versatile, easy to use, and powerful look no further.  this is your machine.