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Your research is as bunk as the Filter Queens filters.
Hold your hand over the intake hole on the Filter Queen, turn it on and let your hand go... watch how much dirt blows out.
Do the same with a RAinbow... NO emmssion. Shine a photographic lite on either see which one is taking in dirt, which is blowing dirt.
Finally, run the filter queen over a spot on the carpet 50, 75, 100 or two hundred times then go over it once with the Rainbow and see that the Queen don't Clean!
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