I am sure the GN bags are ok as they are sold by MIELE and not an aftermarket dealer. But if you look at what is sold IN GOOD MAGNETIC GLASS, you probably won't notice that not all filters are really regular filters. Even the regular "2" filters are not the same quality and quality as the filters sold with the $1100 Vac we bought. But you really can't expect the full truth in sales anymore unless you see it in person.