I'd disagree with you Mike when you say the Sebo System is the same as the Host. Although the equipment is for the same purpose, its' performance is miles apart. The Sebo Duo is a small, light weight machine with one type of small diameter brush. The Host, and other top end machines, are a heavier weight, have larger diameter brushes which are available in 5 different grades. They'll do the same job but to different degrees. Bit like comparing a porty with a T/M. I agree that Dry Extraction performs to it's best as a maintenance system.
Safe and happy cleaning:)
Ken