I take away a star due to not receive the advertised ` scent tablet ' which be the minor value add that lead I to pick this particular seller . however the bag themselves be fine . they have the cardboard collar as oppose to plastic , but it work . I have also try Filtrete , Crucial , Green label , etc. . they all work fine . in fact in 10 year of Miele ownership , I have only ever have 2 bag fail and they be both official Miele brand bag . as I have read on other review for the various bag , I agree it be hard to say if they all actually filter as much dust as Miele -lrb- or maybe even more -rrb- but I will say that I do not notice any residual dust inside the bag chamber regardless of which bag I have use -lrb- other the two previously mention Miele brand bag that fail -rrb- . base on all of this , in my experience , there be no reason to pay for the expensive , price-controlled Miele brand bag . the machine be expensive enough in the first place , and replacement part cost a arm and a leg . so save money on the bag !