The need for a revolving brush...
includes the need to maintain said brush and change the belt. Failing in those stipulations, the properly operated back pack will out clean the poorly maintained upright.
For years rugs were adequately cleaned by straight suction canisters, until carpets and pads became thicker. Daily use of a back pack will do a very good job of keeping a low pile glue down carpet clean. Pro Team has proved it time and again and has documentation to back it up
