[TerryH]

For pure suckage, nothing can beat a Kirby.

Bad...
They are bulky, they aren't convenient, they use bags and are sold generally by high pressure salesman for huge dollars.

Good...
They also have tech drive (1990+ G3-Sentria) which moves the vacuum with 2 lbs of pressure, you can buy them refurbished for 1/4 price of new, they use hepa bags to eliminate dust. They come with dozens of attachments, shampooer, sander, and other stuff. It will even blow up balloons or your childs pool. You control the height of the roller brush. IMHO, nothing will do a better job of cleaning carpets if you can tolerate the "bad".

And with all that Kirby is rated #1 by Consumer Reports on reliability.