Aesthetic design & finish it's the nicest looking wet and dry vacuum cleaner that I've seen
Battery runtime / Charging time highest rated battery life of the bunch at 50 minutes
Cleaning performance on carpet did a fairly similar job at cleaningreally good at their cleaning performance
Drying function 55° C drying that lasts for 30 minutesafter only 30 minutes the brush was completely at 100% dry
LED headlights brightness / usefulness flexi Pro also has an LED headlight on the cleaning head
Maneuverability & swivel steering the rock is the only one that actually has self-propelled wheels and those are bidirectionalthe wheels are going to help you in both directions
Noise level measured that at 46 DBquite tolerable
Just Okay
Energy consumption (kWh / yr) 0.09 KW hours
Power setting versatility they all have auto modeMax moderobbero decided to remove it from the flexi proo
Self-cleaning cycle effectiveness cleaning session lasts 3 and 1/2 minutesI think they all did a somewhat similar job at cleaning the brush roll
Needs Improvement
Automatic suction adjustment (dirt sensing) sensor which I found was not very responsive or accuratesometimes it doesn't kick the machine into higher mode at all
Solution tank capacity 730 ml for the clean water tank and 450 ml for the dirtysignificantly smaller than the others
Under-furniture clearance design limits a little bit the clearance levelI measured that at 14 cm
Weight 5.85 kilgimpact of it weighing more is far less perceived