I didn't need a scrubber to do carpets since I have all hardwood floors, so I purchased the model without the tank. I still have to wipe the floor during scrubbing but I did that on my hand and knees with a scrub brush before my scrubber arrived. My Koblenz was delivered within a week of ordering. I was thrilled how clean my floors looked and how easy it was to complete the rooms in an upright position. The machine seems very well constructed and even though it has some weight it is easy to control. I'm sure buffing and polishing will also be completed with ease. I didn't have any trouble getting extra pads to fit this machine, so I feel I made a good purchase.