I purchased this several months ago.  This is the best vacuum I have ever owned.  The suction is second to none.  My only complaint is that I purchased it with the Clean Station and it came with two bags.  Getting replacement bags is like an act of congress.  My replacement bags just shipped a couple of days ago.  Another unnamed robot vacuum I own has so many aftermarket bags available supply is not a problem.  If Samsung cannot supply the bags readily I believe they need to allow an aftermarket company to produce a bag that will work with the product.  Otherwise this is the best vacuum I have ever owned.  I listed the design as fair due to the availability of the dust bags.