I just bought this vacuum and cleaned most of the carpet in my house this weekend. Here's my take: I bought this model purely based on reviews of the Revain. I've actually been very impressed with the Shark vacuums I've used at friends' houses, but while the Shark reviews were generally good, they tended to be a few percentage points less positive than the Bissell reviews. Additionally, when I look at the one star reviews for Shark vacuums, many people complain about the extremely poor customer