this be my second Bissell . it be similar to the first one but this one have better exhaust filter design that be a better tight fit than the prev one that be so loose it didnt really filter anything . however , this one that I get and i suspect it be probably the same with all be that the cup where the dust be suppose to accumulate be loose . it be not a tight fit . this cause the air to escape and while heavier particle will remain in the cup , light dust will go out and I do notice that the air actually seem dirty after vacuum . well I soon figure out a way around this problem by shim up the part where the cup join the base use a fold piece of plastic with a hole cut in the center . once I get that just right , the air now smell nice and clean after use the machine since the air be not blow back out . Bissell have a higher price machine that be as they describe it a air tight or something like that . but with my little adjustment this one probably work as good as the the one for around $ 200 . other than that I dont have any problem with it . I wash out the cup wash the filter after EVERY use . I take off the hose and flush it periodically . as for the brush not turn , that happen if you happen to pick up a long piece of string as it will work its way to the edge and into the brush joint where it will gum up the mechanism . this happen once and i poke around with a sharp point to work the string back out of the edge and it start spin again . so yeah . . you will have to keep it clean , stay away from sock -lrb- a sock suck up into it will burn out the belt quick , and wash it out often but its good enough for I . if i have enough energy I will run through the house once with the vac and go over again with my Bissell wet vac . no more allergy sneezing . I can breath again without any expensive air purifier that I have spend hundred on without good result . so yes , it could use some improvement but for what I pay I be satisfy with it .