Anything Shark makes is the worst. Poorly made, terrible cyclone design for a bagless, serviceability is either difficult or nonexistent for some components, many parts are either difficult or impossible to get, they often kick the bucket within 1-3 years, and despite all this their higher end models are not cheap.
Shoot, even many corded Dysons will clean better, last longer with proper care, and are often more serviceable (parts easier to get). They're not great either of course but better than Shark.