The Shark UltraCyclone Pet Pro+ is a better handheld vacuum for cleaning pet hair than the BISSELL AeroSlim. The Shark is easier to maintain, it has a larger dirt compartment, and it comes with a turbo brush with a self-cleaning brushroll. It also has a significantly better performance on all surface types. However, some users may prefer the BISSELL’s smaller size. This vacuum also has a better battery performance, it’s easier to store, and has virtually no recurring costs.