After trying every vacuum on the market, my husband and I bought this one by Dyson. I just can't believe the difference! We have four dogs and the shedding never stops plus I'm allergic to dust. This is the only one that we have purchased that picks up the hair and dust in one try. All the others you had to go over it again or redo the job a few days later. Stop wasting money on other models from companies that make claims they don't keep. Think of it as an investment because you'll never have to purchase another one.