I have a Rotho.
Ultimately, it doesn't work very well. Most of the dirt ends up 'moist' and stuck to the filter(s). It's a pain to wash pet hair from the bucket, and the machine is so big, it's like dragging a coffee table around. It uses on a little bit of water. But it's a very interesting machine to show people at Convention time. Like the Pigg, Big Power, Oasis, etc. they don't really work very well.
