I've used this vacuum a few times already as you can see by some of the dirt. I've never had a shark product before so I wasn't familiar but I love it. This vacuum is heavier than I'm used to but when it's powered on it basically steers itself and it does have wheels to move it while it's unplugged. The odor neutralizer is a great feature I've never seen before. It can go on both carpet and hard wood floors. The maintenance is simple. It is kinda pricey but it's worth it so I recommend this. Thanks influenster.