For simple garage use, is the 10+ gallon tank really necessary? I've been thinking of that small Ridgid vac or the hang-up Craftsman, but both have smallish tanks. It'd go in mom's garage and I'd use it whenever I go over to detail. She would occassionally use it to sweep out the garage, maybe when we wet down the floor and clean it too.
The hanging systems seem to be a good idea.. If we mount the vac in the right place, the hose could probably reach the far corners of the garage - she just has your average two car garage. I think that one with a large tank would just discourage her to use it :nixweiss