Good products to save a big investment. The dust bag is just as important as any filter in a vacuum cleaner. If you don't change it often after picking up small particles, it will cause overheating. The belts provide the best performance for the brushroll on all surfaces.
Belts snapped without warning, no burnt rubber smell, no squeaks, just a pop and a clean break. I have no idea if they were already rotten or just poor quality material. Anyway, I'm very dissatisfied.