Good capacity and fantastic cleaning power! Although the unit is quite heavy, the wheels work really well which makes it very easy to push around. I like how it is tapered to not get in the way of handles, etc. The only issue I had was that I couldn't tell when I ran out of solution while using the wand attachment. Also, I dropped the wand attachment from about 2 feet and it broke. Kinda wish for the higher price it would be a higher quality plastic. I was excited that the main unit is wide enough to fit on a stair but there's no way you can use this on stairs as it is way too heavy to effectively maneuver it. But don't fear because the wand attachment is very effective and quite long. Happy cleaning.