Shark is ubiquitous in the vacuum industry as a quality brand.  Their new(er) line is in line with what you'd expect from a Shark.  First thing I noticed (after the few minutes it took to put it together and get it working) was just how quiet it is, my cats didn't run away as they would usually.  But the suction power is as powerful as you need to clean up after 6 cats and a dog.   Plus the new design makes for easy maneuvering and the auto-emptying feels so high-tech. I love it.