I'm very tempted to go out and spend 5 or 7 hundred dollars on a commercial Sensor vacuum like are used at work.
Very basic and very durable.
Long as it isn't bagless and doesn't have any data-sending sensors in the nozzles.
(I
despise bagless vacuum cleaners---I don't use a vacuum cleaner only to get a faceful of dust when I dump
the dirt chamber. I bought my Lux rebuilt five years ago and bought a gross of self-sealing bags concurrently, and
I've had a clean house and no faceful of dust when I throw the full bag out.)