this cleaner provide excellent performance . note the S7210 twist feature the same mechanical as the high-end model at a much cheaper price . each feature tend to add about $ 100 to the base price of the twist : hepa filter , lead headlight , additional filter cartridge , electronic adjustment -lrb- instead of a knob -rrb- , full bag indicator , etc. . also notice that the twist can become the more expensive jazz just by purchase a new filter cartridge . I decide to save the $ 400 and vacuum without the led headlight and on occasion manually check if the bag be full -lrb- the horror of do something manually ! -rrb- the dual-motor system performance be league over any vacuum I have every use , include Kirby and other well-respected brand . the Miele be quiet , smooth , and powerful , just as one expect from german engineering or a swiss watch . it be like switching from a Yugo to a Mercedes .