Very disappointed with this Shark model.  Although the suction and ability to pick up is 
great I have some issues that make it very frustrating  to use.  The top part, which you should be able to remove to do
Stairs or other smaller areas is almost impossible to detach.  I struggle every time and usually give up.  And I am using all 
My strength to try to separate the piece using the tab which is supposed to release the part.  Also the brush accessory they
Include is basically useless.  Maybe if you want to vacuum your computer keyboard, other than that not useful at all.  Wish I purchased
A different style all together.