Hi DIB,
A good vacuum cleaner is a good vacuum cleaner thus a vacuum not rated as number one by CR does not rule out its being a viable choice for purchase. Even better, what CR has begun to do is let in fresh air by allowing the input of readers whether their yea or nay proves agrees with a CR rating or not.
I checked CR's reader reviews re the DC21 and with a vote window of one to five stars, ten owners of this Dyson canister appeared pleased. Out of up to five stars, users ratings averaged to an overall score of four. Even though some deemed its power cord too short, thought it a tad noisy and a little heavier than they'd like they still like the cleaner a great deal. Those issues raised by actual owners makes it understandable the Dyson did not get higher marks.
Dyson uprights, got points off for noise and cetain models that did not have a manual pile height adjustment also ranked as at least "good."
Though I can't understand why a vacuum manufactured by an "icon," and that costs $500, has a short power cord and needs to be quieter, I give way as they are selling. But I understand that. No vacuum satisfies everyone or anyone down to the nth degree but if you like you like it. I have not bought a Dyson -- and won't be buying one -- but I have in past bought vacuums that did not get CRs highest scores and felt pleased with the purchase nonetheless.
Scoring "good" is often good enough. for people who don't don't necessarily worry over how a vacuum works as long as it does the work they bought it for.
Best,
Venson
