I never used them but they do look like a good vacuum.
the best vacuums I have ever had were the Royal commercial.
we recently switch to powr-flite lite weight upright vacuums.
bought about 15 of them. they $uck, fall apart and break constantly.
I'm going to switch back to the royals. for residential I don't think they would
be of great choice but for commercial the royal commercial are great.
if your going to be doing residential carpets and hard wood floors back and forth
and be able to use the same vac for commercial, maybe the best choice for your situation
would be a back pac.
RJ Cleaning Service, Inc.
Serving Central Massachusetts
www.rjcleaning.com