I bought an Oreck last August...and I swear by it...Number 1...Part of their Proceeds goes to the Humane Society of the United States....Thats' where I got the Ad from...

That thing is sooooo powerful....the first day that i used it,it pulled a thread of Berber carpet up!!!
It only weighs 8 pounds,which is great...and has a 20 ft. cord...

It comes with 10 year warranty....and you can have it "tuned Up" 3x per year...I have a service center right near me...
it also came with a hand held vac...which is Fabulous...all attachments...and an oreck iron(Not that I know how to use one)

for 399.00...12 mos...of payments interest free if you prefer...I bought 2 years worth of bags for both vacums...fo 29.99...
so it was Super Reasonable....440.00 total....

I have seen the Animal Dyson...but at the time,I hadn't heard much on it....and I Know that Oreck has been around for years...

I am Sold on the Oreck...
you can go to www.oreck.com
or heck out the ads...in Parade Magazine...in Sunday Paper...
or go to www.hsus.org.
the is the humane society...there is a link for it there