Here's some other thoughts...
I have the DC07 from Woot.
I have to empty the bin a few times during each vacuum run of my house. At first I thought "that is not that great." Then it hit me, I have to empty a FULL CANISTER more than once on each vacuum. This guy really DOES pick up a lot of dirt. I'm not great at house chores, only vacuum once a week at most. And with kids + animals I got dirt.
I can imagine this vacuum being better, but not much.
My Woot referbed Dyson came in a brown box, well packaged, and clean and shiny (looked new). Assymbly instructions were good, but not great. Parts fit together, but some seemed to need a little help (keep in mind I'm from a family of enginneers, and darn picky ones, so I really dig into mechanical aspects of all equipment I buy, to an extreme!) I could see if that if a part was mis-manufactured that it might turn into a referb unit... But then you'd be somewhat garunateed that your unit works 100% IMHO.
This is a good buy. Especially at the price. Remember that most web reviews were reviewing this at $500, not $250. Consumer Reports rated it as good to exceptional in it's tests, but didn't give it thumbs up because of cost. Now that cost is in line, you should consider that it might be more favorable in Consumer Reports' eyes...