ets are rubbish 
That's a bit harsh Ed

I haven't had any problems with them.
Darran, the motor housing has a plastic grille where the air is drawn in. This is where the debris is gathering. It's leaves, clumps of moss, sludge etc, anything light. If it gets blocked then all suction is lost. I clear it out by hand every so often but as I said I'm worried about what might be going into the motors. The vac does have a filter but the person I originally spoke to said he didn't bother with it. It gets into a heck of a state on some jobs.
Cleancare. Only had the vac 9 months and am hoping it doesn't need new motors yet
