The Airsis is a trip because while its running it does a bit of a light show. The lid over the motor is translucent and there are led lights underneath. It glows in a sort of blue halo when running normally. If there is a clog a red light comes on but here is where it gets fun. On shut down a little motor inside operates a scraper that rubs across the back of that deep pleated filter to knock any dirt stuck to it back into the dust chamber. It makes this little scritching noise as it does this and the blue lighting flashes in synch with the scraper thingy.
I have an Hitachi CV-RP9000 bagged canister that has a motorized bag shaker that operates on start up and shut down to unclog the bag. It also talks to me in Japanese to coach me. Our Panasonic robot also talks. If it is full and sitting in its dock it apparently knows when I walk by and will scold me until I empty it !!!