I chose because of the price and the small distance to the ceiling for that support. Even the Acer X1373WH bears the holder without any major problems. However, a drawback is the, in my opinion too little projection of the screw towards the projector. This is just 3mm. Looks damn little, but is still relatively good. Another shortcoming is the clamping screw, this is difficult to apply the required torque to the projector to keep in the desired position, even if this relatively steep going down.
