I've owned a Shark Navigator liftaway before, totally loved it. We basically just wore it out and I've been using another brand my friend gave me until I could get a new one. This model is a little different and quite a bit heavier, but it does the same A-MAZ-ING job. We have pets that shed endlessly and keeping the hair under control is so much easier with this vacuum. We vacuumed with the borrowed vacuum and then with the Shark -- my mouth literally fell open at the amount of dirt and hair we pulled out of the carpet. I'm soooo happy to have my new Shark!!