Review on Miele 10123210 AirClean Type GN 3D Efficiency Dust Bag - Pack of 4 Bags & 2 Filters, in White by Brandon Barrett

I use these dust bags with my Miele Titan Classic with HEPA filter (New Miele Classic C1 Titan cylinder vacuum cleaner, mango red) which I really like. The performance of any vacuum is limited by the quality of the dust bags used and I am willing to pay more for better performance. These genuine Miele bags offer objectively better cleaning than non-genuine bags which I once tried to save money on. These bags might have been almost half the price, but they only lasted a fraction of the time than the AirClean 3D bags and worked well for a short time. In fact, I was completely blown away by the amount of dirt and debris packed into AirClean 3D bags before the suction power noticeably drops when a new bag is needed. The build quality of these dust bags is exceptional - I can't think of a single tear or tear when removing them (even when covered in dirt) - and changing the bag is a breeze as long as it's not full. That being said, I have two small gripes that explain the 4-star rating: 1) When the bag fills up, it can feel like a very dense pad of foam, making it difficult to break out of the vacuum and always allowing some the dirty contents can leak (this is partly an operator problem - should I change the packaging sooner); and 2) it's expensive for vacuum bags. But why compromise the performance of a $500 vacuum with a cheap, inefficient bag?