I am serching for a new hand tool duct collector vac, I am down to the Fein and Festool, but just came across the Bosch Airsweep. It is more expensive than the Festool or Fein! It does have some interesting features like a filter shaker to keep the suction up and a switch to run on 15 or 20 amps (a non-issue for me) along with several other interesting ideas. Who knew the German's sucked so much?