Shark Brand vacuums are my favorite.  The Shark Vertex is light weight, it has powerful suction and uses very little storage space. The dust canister is easy to remove.  The wand is handy to reach into corners of the room to remove spider webs and can be disconnected from the beater bar attachment to turn into a hand held vacuum to use on stairs or in the car. There are several attachments that come with the vacuum. A long power cord makes it possible for me to vacuum two rooms without switching outlets.