On Sat 16 Jan 2010 09:11:53p, markm75 told us...
If you want a good vacuum that lasts, plastic in any form is *not* the way to go. Kirby, Filter Queen, Rainbow, Electrolux, etc., are extremely well constructed and do a good job. They are all also expensive, but cost per year will probably be ultimately cheaper than buying a series of plastic crap. I know of several Kirbys that are still in regular use after 40-50 years.
Having said that, a good friend bought a Dyson "ball" vacuum designed for good pet hair removal. She swears by it and can't believe how much pet hair along with other soil it removes. Even though much of it *is* plastic, when I looked it over the construction seemed solid.
FWIW