how are they on hard floors? I have a lot of hard floors to clean in my dometic cleaning business and used to use my customers vacs, but I found al the uprights would simply blow the dust and hair around the floor and I would spend ages chasing it about. Some cylinders were OK, but I wanted to get a general purpose vac. In the end I bought and Black and Decker parquet, which has a hard fllor brush tool. It is good, but the vac loses it suction quickly........it is really frustrating!!