Airflow (CFM) 42 CFM of airflow at the wand and 33 CFM at the head on max power
Cleaning performance on carpet on carpets it picked up everything from fine debris to extra large debris very nicely
Cleaning performance on hard floors on hard floors it did find debris medium-sized debris and even extra-large piles of debris extremely well
Filtration quality (HEPA rating, multi-stage) it's a sealed system with a HEPA filter and it keeps all the stuff you vacuum up from leaking back into your home
Hair-wrap prevention / anti-tangle tech it didn't get a single tangle in any of those tests
Replaceable-battery convenience the rocket cordless has a removable battery
Suction power (air watts) 48 inches of suction on max power
Just Okay
Attachment variety & compatibility it comes with two attachments but I do Attachments feel they're a little awkward to use
Battery runtime / Charging time it can get 40 minutes on a single charge
Dust-bin emptying I also didn't like that the bin was not Dustbin removable
Weight I feel like they're a little too heavy
Needs Improvement
Storage footprint & upright-stand stability it didn't come with a stand or an easy way to hang it up