I've had a lot of B & D dustbusters over the years and I've loved them all but this one is the best one.  I have two of these but one is very old but still going strong.  The battery life in this new one is outstanding for the additional power 20V vs 12V.  It's easy to empty and clean and with six cats to clean up after, especially cat litter, this is a must.  I could not be without this.  I'm looking forward to trying one with the powered brush heads soon.