I have used dust busters constantly and am always wishing that I didn't have to practically kneel on the floor to clean.  This product was the solution to my problem.  I tested it on my hardwood floors (which are original pine and very uneven, with wide cracks), my slate floors (also bumpy and uneven)  and on my newly carpeted (very light beige) bedroom floor.  The Eureka was beyond my expectations on both surfaces.  I am used to seeing some specs left behind on the hard floor surfaces and carpet after I use my very expensive Dyson vacuum.  However, the Eureka cleaned up everything and the battery has lasted as long as needed to get a few rooms done.  I plan to buy another for downstairs and keep this upstairs.  Good-bye regular dust busters!!