Eureka makes one that is called Sanitaire, you can buy it on line at THINKVACUUMS.COM
It runs about 200.00. I husband is a carpet installer and he swears by them. If you have pets it is wonderful picking up dog hair and the nap in the carpet seems to pick up when vaccumming. When we replaced are carpet my husband told he the true signs of a good vacuum is when you pull the carpet back and the amound of dirt that has shifted through the carpet is the true test. When he pulled ours back there was very little dirt or dust from the worn out pad. Not bad for 4 people 3 dogs and 2 cats. I highly reccomend the Sanitaire