What kind do you use. I finally broke down and bought a Dyson DC-41 Animal. What a difference it makes in cleaning the carpet. We own one cat and I can't believe how much hair that little urchin has put in my carpet. I find the Dyson to be much quieter than previous vacuums and the suction power is superb. The ball make manuevering sublime and the transistion from carpet to hard surfaces is nothing short of fantastic.
If you own stock in a broom company my advice would be to liquidate that position.