The Shark Stratos™ Corded Stick Vacuum with DuoClean® Powerfins™ Hairpro™ and Odor Neutralizer Technology is my favorite vacuum I have used! I'm not exaggerating. The vacuum was super easy to put together, self explanatory. I like it comes with 3 attachments, options. Do not however care for the storage for them on the stick. 
The suction on this thing! Wow! I swept my bedroom and it got so much up out of the carpet I was shocked! Even left carpet lines on my old carpet. I had to clean out the canister before going to another room. I went from carpet in the living room to hard wood in the dining room and kitchen with a push of the button. It got up so much dog hair and with the light on I seen all the hair! I have all good things to say about this shark vacuum and I'm not a first time shark user. Except one, the motor gets pretty warm within 30 minutes of running or so. 
Gotta appreciate a good warranty also!