Ex Gizmodo
Vacuum makers typically measure suction power by air watts, and Miele claims it can sustain 1,100 watts, while Dyson claims the V11 does 185 watts.
But cords and bags serve a purpose! They?re not inconveniences to triumph over. Have you ever emptied a bagless vac? It?s a challenging task. Plumes of dust billow out, and a stench fills the air unless you use a fresh trash bag and empty the canister at the very bottom of the bag to prevent releasing dust everywhere.
Then there?s the hair/fur/debris that will stick in smaller canisters like the ones on Dyson?s vacs, forcing you to remove it all by hand. If you have pets or allergies or both, bagless vacs are a challenge. I have had at least one roommate who habitually put off emptying ours because it?s such a filthy chore.
The cordless situation isn?t much better. My Dyson V6 lasts a while on a charge, but I?ve already had to spend $35 to replace the battery once, and Dyson might have fixed that issue with the new V11, which improves the power, adds a battery meter, and increases the size of the receptacle while almost making it easier to empty.