Had an older version of this product that I'd had for maybe ten years, which was starting to fail.  Wanted to get another one for quick pick ups.  This vac is much improved over my previous one, and the extra battery definitely comes in handy.  Broke my ankle a few months ago and couldn't use a regular vacuum until just a few weeks ago.  I have two medium to large size dogs that shed like crazy.  Normally I vacuum my family room and kitchen with a full size vacuum cleaner every day because I can't stand the dog hair.  This cordless vac works great on the dog hair and anything else that gets on the carpet or floor.  I've been quite shocked at how much dog hair is in the dust cup when I go to empty it after every use.  Very satisfied with this purchase.