We have been using a Riccar vacuum and decided to try the Shark PowerDetect pet.  We have a labrador and thought our vacuum was doing a great job.  Using the Shark for the first time, the amount of dog hair and dirt it picked up that our Riccar missed is amazing.  It's a bit disgusting how much our Riccar vacuum missed.  The Shark was easy to assemble, it's light weight, the swivel base, the ease of emptying the canaster, and wand are fantastic.  I am extremely impressed with the Shark and I would recommend it to anyone looking for a new vacuum.