Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Bad ergonomics, heavy and bulky. I regret I have purchased it.

Stay away from this badly engineered appliance. It's bulky, not maneuverable at all and it doesn't slide easily on the floor. Old generation wheels are finished with rubber and not silicone. It lacks a light-weight attachment for wood flooring or bare floors (you would be forced to use the carpet motorized brush-roll in off position which weighs a ton). Also every time I use it I have the sensation that the wand's handle is going to give up since it's evident that it's not designed to carry all that weight, plus the suction. It also lacks a general power switch: you will have to use the sliding cursor/power knob to disconnect the motor. If you're in doubt about the purchase of a canister vacuum and can afford to pay a bit extra, I strongly recommend to go for Electrolux Ultra One... It's a more expensive appliance but it's worth every penny: the difference in performance is immense.