The boss cyclone is a very good cleaner. It is very light and is easy to push around the house. It has amazing cleaner power through the 1300 watt motor and the air is noticable cleaner afterwards. This is probably because the air isn't dragged through a bag, and because there a 3 filters cleaning the exhaust air. The cyclone bit is pretty good and seems to work and you get to see all the crap you have just picked up spinning around. The only trouble with this cleaner is that it does rely heavily on the 3 filters and they do get clogged up very quickly. We have also broken two drive belts which seem to snap too easily when you pick up a rug or something. Having not to use a bag is a big advantage and you can really smell and see the difference.