I just used this for the first time.  Cleaned about 5000 sq. ft.  Absolutely loved it.  Cleaned tile, wood, carpet, rugs, couch, broken glass jar of dry bean and veggie soup mix!  It just about filled up the bag, but definitely worth it!  Cleaned both carpet and wood stairs also.  You do have to get used to the rug or flat surface button on the flat blade attachment, just remember to push it with your foot when you change surfaces.  Also, there is a valve cover near the angle piece that connects to the hose.  Make sure it is closed if you want full suction.  This slides easily, so if your suction changes, check the valve first.  Simple to put together and use all over the house!  A little noisy, like a shop vac, but much better moving around corners and changing from carpet to tile or wood, rolls great!  Easy to carry up stairs, stands upright in the middle of stairs.  Long cord!!!  Thanks Eureka for a nice product!