Hi,
Which? magazine has just made a preliminary announcement re the Sebo D series vacuums. Bags being my preference, I was pleased to read that the D series sports a 6-liter bag (about a gallon and a half). The airbelt is a little wasted on me as I've never had problems with marring furniture. However, if it will keep the machine itself from looking like it belongs in a second-hand shop for a few years I'm all for it.
Which? plans to test the D series soon.
The story is here: http://www.which.co.uk/news/2010/07/new-vacs-with-bumpers-to-protect-your-furniture-219804
Venson