At least for the two quarters of calendar year 2005, the title for most new vacuum units sold is held by Dirt Devil (according to NPD).
 
Carmine D.

I have to disagree that a specific $59 DD vacuum would be much of a traffic driver.  My experience would tell me a typical consumer would enter a store looking for a vac in this price range and end up with a DD as opposed to a consumer deciding to make a specific trip to Best Buy to get the $59 DD swivel glide.  The customer who is making that specific trip to buy a predetirmend $59 DD is unlikely to be the type to impulse buy a flat screen TV.  

So you would think that the $59 DD is a destination purchase?  In other words you think most of these are sold in Best Buy by people making a specific trip to Best Buy having already chosen that specific vacuum to purchase?
 
To then take it a step further that consumer that made that specific trip to purchase that specific $59 DD at a specific retailer would then impulse buy a flat screen?

Quote from Carmine_Difazio   on 05/23/06 at 5:06pm:

Yes,  those sports fans went in to buy a vacuum and came out with a $4000 TV.  
They also returned the TV after the game along with the POS vacuum.

Quote from HARDSELL   on 05/23/06 at 10:15pm:

 
 
Not with "March Madness" just a few short weeks away fromt he Superbowl, especially if they are basketball fans.  The likelihood of a vacuum getting returned after the Superbowl weekend is greater than a big screen TV.
 
Vacuums are THE MOST returned of all appliances to big box retailers.  Vacuums are also the most costly merchandise returns for TARGET retail stores in recent years and rank high on the list of operating costs for other big box retailers.
 
I suspect they are not the $59 DD vacuums either, despite the fact that NPD reports Dirt Devil sold the most vacuums in units from January 2005-June 2005.
 
Carmine D.