Been using for about 3 was now.  Easy setup, impressive how it easily mapped the house.  Does clean for over 2 hrs, returning to the base to dump its load.  Not so good picking up bird seed, it does; however then spreads throughout the house.  Seems to spit most often when going from wood floor onto large area rugs.  Speaking of large area rugs, the suction does clear the dog hair, I run my other company’s machine in the heavy dog hair area.  Wish there was a Shark with better suction.  More than willing to let you test in my house.